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[hemmerling] Internet Messenger, IP Telephony, Video Conferencing, Voice Over IP, Unified Messaging, Unified Communications

Related Pages:

General Voice Over IP Resources

Open Voice Over IP Protocols

World Time

Internet Messenger / Telephone / Videophone Clients

AIM ( AOL Instant Messenger )

  • AIM ( AOL Instant Messenger ).

Clubhouse

Collanos Phone

CometChat

Element X ( ElementX )

G Data Secure Chat

Gadu-Gadu ( GG )

  • Poznaj GG - The Polish #1 messenger, #1 messenger of Poland.
    • Poznaj GG "Zarejestruj sie" - “Register”.
      • Na telefonie ( Android, MacOSX ).
      • Na komputerze ( Windows, MacOSX ).
      • W przegladarce ( Browser ).
    • Login.
      • Login at desktop PC browser:
        • “Zaloguj się”.
        • The menu option might be hidden, if the browser window is not wide enough :-( ( i.e. the screen is less than 1280 pixel width ).
      • Login at smartphone & desktop PC browser:
        • In the green widget at the bottom “Napsz do nas”, click on the button “Wyslij”.
        • In the loaded widget page, at “Aby kontynuowac rozmowe na gg”, click the link “Zaloguj sie”. The login screen opens :-).
        • After login, load the URL http://www.gg.pl/ in your browser, to start using the messenger :-(. Load a browser bookmark, or type in the URL manually...
    • Logout: At the left main menu bar item “GG”, select “Wyloguj” to logout.
  • Google Play "GG".
  • EN.Wikipedia "Gadu-Gadu", DE.Wikipedia "Gadu-Gadu".

ginlo ( formerly: SIMSme )

Google Hangouts ( formerly: Google Talk, Google Voice )

The Service

Clients

API

Resources

Google RCS

HoneyQ

ICQ

imo

  • imo for Win, MacOSX, Android, iPhone - “imo free video calls and chat”.
  • Google Play "imo free video calls and chat".
  • “To use imo for Windows Desktop, you must first install the app on Android ,iPhone or Windows Phone” :-(, 2020-11.

Instagram

The Service

Clients

Resources

  • TheVerge "Instagram starts bringing DMs to the web", 2020-01-14.
  • If you try to login at a PC by browser, and Instagram asks you to enter a 6-digit number sent by SMS,
    • Instagram just sents the SMS if Instagram is installed on the smartphone :-(.
    • So if by some reason, Instagram is not installed on a Smartphone, but you get asked to enter the 6-digit number, Instagram did not sent you the SMS with the number :-(, so you can't login by browser. Solution: Install Instagram on your Smartphone, again.

iVisit

  • iVisit - the free iVisit Desktop, the free iVisitskype Presenter.

Jabber

Jajah

Kakao Talk

  • Kakao Talk for Windows.
    • A Kakao account can just be created on a mobile device. You can´t create a device by the Windows application, nor by the website.

Kik

  • Kik for Android, IOS, Windows Phone.
    • Warning: If you logout on a device, and login from a different device:
      1. The contents of the first device is not available on the new device
      2. But by the login on the new device, all contents on the old device is not available anymore at next login, i.e. the old contents is deleted!.
    • 2020: Links or E-Mail addresses sent by messsages, can't be opened in the browser or copied to the clipboard :-(. The same with ordinary text of text messages, they can't be copied to the clipboard :-(. 2023-05: You may copy text and URLs to clipboard :-).
    • “Delete Message? The message will not be deleted from XXX's chat”.
    • Warning: Images disappear from the chat within a few hours :-(!!!
      • However, if you click on an image, there is a download symbol ( an arrow ) at right upper corner. By this you transfer an image to the smartphone gallery, in case of Android smartphone, with MediaManager of BlueStacks to “Gallery / Kik”.
    • Google Play "Kik".
    • Kik "Reset your Password".
    • Kik Browser, Kik Top Apps.
    • Kik Help Center.
    • Kik Me - Share Kik usernames Meet Kik friends Here.
    • Group Kik.
    • EN.Wikipedia "Kik Messenger", DE.Wikipedia "Kik Messenger".
  • 2025-01. Kik doesn't work on Bluestacks, Android 11 & Android 7 ( Nougat ):
    • Error message “Log In Failed. If the error persists, verify that you are on the latest Kik version from App/Play Store” :-(, while login on an Android 14 smartphone worked properly :-).

Line ( ID = Mobile Phone Number )

  • LINE - “Free Messaging Whenever, Wherever. Send free one-on-one and group texts to your friends anytime, anywhere! LINE is available for a variety of smartphone devices (iPhone, Android, Windows Phone, BlackBerry, and Nokia) and even your PC”.
  • LINE "Download" for Windows.
  • Google Play "LINE: Free Calls & Messages".
  • Your mobile phone number is your ID!
  • Warning: If you logout on a device, and login from a different device:
    1. The contents of the first device is not available on the new device
    2. But by the login on the new device, all contents on the old device is not available anymore at next login, i.e. the old contents is deleted!

Mattermost

  • Mattermost - “The Only Open Source Collaboration Platform for Developers. Bring your tools and teams together in a fully secure location”.
    • Free self-hosted software “Enterprise E0”:
      • Self-hosted one-to-one and group messaging, file sharing and search.
      • Native apps for iOS, Android, Windows, Mac and Linux.
      • Unlimited integrations.
      • Tools for custom branding.
      • Unlimited search history.
      • Multi-language translation.
      • Multi-factor Authentication.
      • Reference customer: Forth ( chat.forth-standard.org ).
    • Commercial hosting services.
  • The user interface of the chat function looks like a “Slack” clone :-).

a

Microsoft

Microsoft NetMeeting

MSN Messenger, Windows Messenger, Windows Live Messenger, Microsoft Office Communicator

Windows Live
Windows Messenger
Microsoft Office Communicator

Microsoft Teams

The Tool
Microsoft Teams Free (classic)
  • Microsoft Support "Upgrade from Microsoft Teams Free (classic) to Microsoft Teams".
    • “After April 12, 2023, Microsoft is retiring Microsoft Teams Free (classic), the legacy free Teams app for business”.
    • “You may switch to using the new free version of Teams, however, you’ll have access to a different set of features than you did with Microsoft Teams Free (classic), and your data won’t be retained (including data for existing channels, chats, and recurring meetings)” :-(.
Login on Android App, with Skype ID & Password
  • Works fine.
Login on Browser, Skype ID & Passwort
Login on Windows App, with Microsoft ID ( E-Mail ) & Password
Login on Windows App, with Skype ID & Password
  • Before changing the password, there was an error message 
    Oops, something went wrong. Someone has entered an incorrect password for this account too many times. To help protect you, we've temporarily locked your account. Please try again later.
Adding new Contacts
  • The only way to add contacts, which are NOT on the contact list displayed within Teams, is to invite by E-Mail.
  • Invited people get a message by noreply@email.teams.microsoft.com: “XXX sent you a message. XXX is trying to reach you in Teams”, with a “Reply” button.
Transfer of Skype contacts & chat To Team, 2024-04
  • All Skype contacts are transfered to Teams contacts on any devices ( Windows App on the Skype device, Browser on the Skype device, Smartphone on the Skype device ).
    • Windows App ( from the same device ): : Skype contacts + Skype avantars + old Skype chat is transfered properly :-).
    • Browser: Skype contacts are “Unknown Users” ( this name can't be changed ). Old Skype chat is transfered properly.
    • Smartphone App ( from the same device ): Skype contacts + Skype avantars are transfered properly :-). Old Skype chat isn't transfered :-(.
  • As Skype is still in service:
    • Chat sent from Skype / Teams is duplicated on Teams :-). Sometimes, the order of messages in Teams is not in order of sending. Sometimes messages seem to be duplicated in the chat, i.e. 2 same messages in the chat.
    • Images sent from Skype are not duplicated on Teams :-(.
  • Search:
    • Skype: Search in the chat of a single contact :-).
    • Teams:
      • Search just possible in the chat of all contacts :-(.
      • Search for profiles:
        • 2024-04: It was necessary to invite friends by E-Mail. No search engine for the member database.
        • 2025-10: Now you can search the member database by name, for new possible contacts.
Teams in the Android File System
  • Downloaded photos are stored at the local drive “\Pictures”, not on the extra drive where you can order Android to store photos & videos at “\DCIM\Camera”. In opposite to “Telegram”, “TeleGuard”, “Whatsapp”. Names of downloaded photos: “tmp_xxx-xxx-xxx-xxx-xxx.jepg”. No extra subfolder is used :-(.
Teams in the Windows File System
  • Working solutions in 2025:
    • Microsoft Community "New Teams File Location".
      • Microsoft Community "cannot create shortcut of new Teams".
        • “By default you cannot create desktop shortcut for the Pre-installed Microsoft applications or the programs you download from Microsoft store”. Solution:
          1. Click “Windows” + “R” keys to open the 'Run dialog box'.
          2. Type shell:appsfolder and click enter. It opens the application folder.
          3. Find Microsoft teams in the lists, right-click and click create shortcut.
    • reddit r/Office365 "New Outlook & New Teams EXE Location?", 2024.
      1. Run the app.
      2. Click “CTRL” + “SHIFT” + “ESC” to open Task Manager.
      3. Click the dropdown for the app ( “Runtime Broker”, “Microsoft Teams”, “Chat | XXX | Microsoft Teams” ).
      4. Right click on “Microsoft Teams”, click on “Open file location”.
      5. Right click the respective “ms-teams.exe”, select “Send to - Desktop (create shortcut)” to create a desktop icon.
  • This solution doesn' work in 2025:
    • Microsoft Answers "New Teams File Location".
      • ”%localappdata%\Microsoft\Teams\Current\” = “C:\Users\Administrator\AppData\Local\Microsoft\Teams\Current”.
      • In 2025-03, this location doesn't exist :-(, nor any similar location in this path :-(, after installation of “Microsoft Teams”.
No Video Preview
  • In opposite to SKYPE, you may not check your video cam by a video preview :-(.
E-Mails SPAM
  • You can't stop E-Mail SPAM about messages sent to you when you are offline:
    Microsoft Teams <noreply@email.teams.microsoft.com>
XXXX sent you a message
XXXX YYYY is trying to reach you in Teams

XXXX YYYY
Message text

Reply in Teams 
<https://urlshortener.teams.cloud.microsoft/ZZZZ>
 
teams invite
 
This email was sent from an unmonitored mailbox. To stop receiving these 
emails or update the frequency, go to Settings > Notifications > Emails 
in your Teams app.
  • This setting “Settings > Notifications > Emails” doesn't exist :-(.
  • There are settings “Settings > Notifications > Missed activity emails” & “Settings > Notifications > Community Emails”.
Resources

SimpleX

  • SimpleX - “The first messenger without user IDs”.
  • Presented in the computer magazine “C't 9/2025” of 2025-04-17 :-).

Skype

End of Service
The Service
Windows App vs. Android App
  1. Sending messages at non-contacts ( “Waiting for XXX to accept invitation” ).
    • Android app: You can't send messages to non-contacts :-(.
    • Windows app: You may send a limited number of messages to non-contacts :-).
  2. Orientation of “Landscape” photos with Android 14 smartphones.
    • Holding the Android smartphone in your hands, so that the 3 Android buttons on the right side:
      • The photo is in right orientation both for Facebook, Skype, photo viewer apps like “ESP View” :-).
    • Holding the Android smartphone in your hands, so that the 3 Android buttons on the left side:
      • The photo is in right orientation both for Android “Facebook” app, Android photo viewer apps like “ESP View” :-).
      • The photo is turned upside down 180 degrees for Android “Skype” app :-(. If you store the photo by any Android photo app, the photo is stored in proper orientation also for Skype :-).
Utilities
  • The free Skype log viewer Nirsoft "SkypeLogView" for Windows.
    • The default file that Skype looks for conversation is main.db
%AppData%\Skype\SkypeUserName\main.db
  • “SkypeLogView” asks for and detects automatically the Skype user directory on Window:
C:\Users\<user>\AppData\Roaming\Skype\<skypeusername>
Resources
  • As of 2019-01, you can remove messages ( and so sent pictures ) as sender :-(. “This message has been removed” :-(.
  • Skype search:
    1. For MSN IDs: “live:yanned”.
    2. For names: “yanned” - Doesn´t look for Skype ID or MSN IDs :-(.
  • How to save the personal data for a new installation of Skype?
    • “Options / Privacy settings / Save your history to CSV file” - Click on “Export Chat History”.
    • Skype "Wie kann ich Skype für Windows Desktop deinstallieren und erneut installieren?".
      1. Press “WindowsButton R” and open the Windows explorer by ”%appdata%\skype”.
      2. Save the directory “My Skype Received Files” and the directory with your Skype name. If you login by a Microsoft account, the name of the directory starts with “live#3”.
    • Skype, classical Desktop Application for Win7, Win8, Win10.
    • Skype Windows App for Win10.
      • Microsoft Community "Where is the main.db file for new skype???", 2017-11-20.
        • With the latest version 12.X update to the new Microsoft Skype for Windows 10 (Skype UWP) application, the procedure for how and where the messages are saved has changed quite dramatically.
        • The local settings are now available in this folder:
          • ”%localappdata%\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\LocalState\<Skype Name>”.
          • "C:\Users\<username>\AppData\Local\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\LocalState\<skype_name>"
"C:\Users\Administrator\AppData\Local\Packages\Microsoft.SkypeApp_kzf8qxf38zg5c\LocalState"
        • The well known main.db file is still present in this folder, but it is no longer used to save chat messages. Also other data used to be saved in this database file are now missing.
        • Instead, the new Skype UWP application is now using another database file, skype.db. Inspecting this database file with a SQLite browser, shows that the chat messages are now saved in this file in the messages Table, but under different headings..
  • Business Skype doesn´t save chat messages, after finishing or even halting a chat. I was told by experts, that in case that Microsoft Outlook ( not: Outlook Express ) is installed, chats might be saved automatically.

Miranda IM

mIRC

Nimbuzz

Parler

Paltalk

PowWow

SayHi

Session

The Service

  • Session for Windows, Android, iPhone - “Session is an end-to-end encrypted messenger that minimises sensitive metadata, designed and built for people who want absolute privacy and freedom from any form of surveillance”.
  • GitHub "oxen-io / session-android".

Resources

  • Session ID:
    • Click on the profile icon in the contact explorer, to be able to see and copy the Session ID.
    • The Session ID is not displayed, if you click in the message window on top on the profile. There you just see “Media” and “Files” shared with this profile.

*Customer feedback:

  • You can't change the screen name of a profile. The screen name of the profile, given by the owner, might be inappropriate :-(, i.e. doesn't help the you to remember who is the owner.
  • Setting for each contact:
    • Disappearing messages ( “Verschwindende Nachrichten” ) :-(.

Signal Private Messenger

  • Signal for Android, iPhone & Windows Desktop.
  • Google Play "Signal Private Messenger".
  • Devices:
    • Mobile:
      • Your mobile phone number is your ID!
      • You may just have 1 active phone and 1 ( or some?) linked desktop apps! ( Error message “This device is no longer registered. This is likely because you registered your phone number with Signal on another device”. “Re-register device” ) :-(.
      • Message “Verify to Continue Messaging”.
      • You can't transfer a profile from a smartphone simulator ( i.e. Bluestacks ) to a smartphone ( Error message on BlueStacks “Sorry, it appears this device does not support Wi-Fi Direct. Signal uses Wi-Fi Direct to discover and connect with your old Android device. You can still restore a backup to restore your account from your old Android device” ).
    • Windows Desktop.
      • Message “To use the Signal desktop app, Signal must first be installed on your phone”.
      • If you chat on a linked device, of course the messages are visible on the smartphone app. However, if you link a new device, old messages are not transfered to the new linked device. Message “For your security, chat history isn't transfered to new linked devices”.
  • You have to setup a “PIN”, either numeric pin ( 4 digits or more ), or an alphanumeric pin!
  • GMX "Signal: Was kann die WhatsApp-Alternative?", 2021.
  • EN.Wikipedia "Signal (software)", DE.Wikipedia "Signal (Messenger)".

Slack

SnapChat

  • SnapChat - “The fastest way to share a moment!”.
  • Google Play "Snapchat" - Messenger with the option to modify photos by “glasses”, “animal ( dog / cat ) ears”.
  • SnapChat Web interface
    • 2024-02: The Web interface does not support Firefox ( “Browser not supported. Snapchat for Web only supports the latest version of Chrome, Edge and Safari on computers (not phones or tablets) at this time” ) :-(.
    • 2025-01: The Web interface does not support Firefox ( “Your version of Snapchat for Web is too old. We’re updating the app. The page will reload automatically when the update is complete. If this takes a long time, you can force it to refresh (Ctrl-F5 / Cmd-Shift-R)” ).
  • Bluestacks.
  • SnapChat doesn't work on BlueStacks:
    • Bluestacks, 2024-02:
      • At start of application on BlueStacks Nougat32, there is the BlueStacks message “Update recommended. For better gameplay experience, we recommend playing this game on Android Pie” ( Android 9 (API 28) )” after updating BlueStacks App Player. (_) Automatically download using BlueStacks X (_) Manually download from our offical page”.
    • Bluestacks, Android Nougat 7.0 (32-bit), 2025-01.
      • Smartphone app login is refused by “Due to repeated failed attempts or other unusual activity, your access to Snapchat is temporarily disabled” :-(.
    • Bluestacks, Android 11, 2025-01:
      • The app is frozen with yellow screen :-(.
      • Or the app crashes after entering username and passwort, immediately :-(
  • Invitation of friends from the smartphone contact list:
    • Warning, Snapchat might send an SMS to members of your contact list :-(, if you agree to invite them :-(.
  • Snapchat has no “never” option for deleting messages anymore ( as of 2025-05 ) :-(
    • Snapchat Help "When does Snapchat delete Snaps and Chats?".
    • Open a profile of a chat friend.
    • Click on the burger menu ( 3 dots ”...” ).
    • Select “Chat and notification settings” / “Delete Chats...”
    • Select 'After Viewing,' '24 Hours After Viewing,' '7 Days After Viewing,' or 'Never' :-(.

Speak Freely

stashcat

Talque

  • Talque.
  • “talque ist der neue Messenger, mit dem Sie ganz einfach mit anderen chatten, gemeinsame Termine finden, große Files versenden und Videocalls führen können. Alles direkt im Browser”.
  • “Um einer Konferenz oder einem Netzwerk beizutreten, geben Sie bitte den Zugangscode ein” ⇒ “5gconf19”.

Telegram / Nicegram

Telegram

  • Telegram for Android, Desktop ( Windows ), Browser ( “Web-version” ).
  • Your mobile phone number, or a self-defined username, is your ID!
  • Secret chat:
    • Use end-to-end-encryption.
    • Leave no trace on our servers.
    • Have a self-destruct timer.
    • Do not allow forwarding.
  • Non-secret chat: Available on several devices, in-sync.
  • My ( negative ) experience:
    • You may not forward a multimedia object ( photo, video ), which was forwarded to you :-(.
    • If a profile mutes somebody ( “Block user” ) by the profile menu, the owner of the muted profile doesn't have neither access to the profile anymore, nor to the past messages, immediately :-(.
    • If a profile deletes the chat ( “Delete chat” ) by the chat menu, both received and sent messages are deleted, and the personal settings of the profile name are reset to the standard given by the profile owner :-(.
    • If a profile is deleted by the owner, past messages are still readable by anybody who got the messages ( ok ).
  • CHIP Praxistipps "Telegram ohne Telefonnummer nutzen - alle Infos", 2021.
    • “Falls Sie mit Unbekannten chatten möchten, aber keine persönlichen Daten über sich preisgeben wollen, haben Sie bei Möglichkeit, bei Telegram einen Benutzernamen zu erstellen... Nun können Sie den Benutzernamen mit Personen teilen, die Ihre Handynummer nicht zu Gesicht bekommen sollen”.
    • “Wenn Sie den Link https://t.me/EuerName teilen, können Sie einen neuen Chat mit unterdrückter Nummer starten”.
  • In a special case, a Telegram user with hidden phone number started a video call with me. By that, the registered phone number was visible, so that I was able to add the Telegram user as contact in my smartphone.
  • V-User "How to Use Live Location Feature on Telegram".
    • “Staple” icon above the text input field ( next to the “camera” icon at right side ), “Location”, “Send selected location”.
    • It is possible to move the shared location manually, as with selecting a target for travel :-(. But it is extremely laborious :-).
  • Automatic Translation:
Sending Map with Location
  • Smartphone app:
    • Click on the paperclip icon for selecting an attachment.
    • Select “Location”.
      • “Send selected position” - You may move the red pin icon to another place, e.g. for a meetup.
      • “Share my Live Location for”.
  • Browser:
    • This feature isn't available with browser interface.
Self-destructive Photos
  • Web interface: “This message is currently not supported on Telegram Web. Try getdesktop.telegram.org”.
  • Windows client: “‎⁨XXX sent you a self-destructing photo. Please view it on your mobile”.
  • Mobile client: It isn't possible to do a screenshot with Android 15 :-(.
Blocking
  • Membership in Telegram groups may cause profile blocking. If the Telegram team detects a Telegram group with special postings through chat scanning, they will likely block all profiles of Telegram group members, thus preventing further Telegram use with the registered mobile phone number.
Penalty
  • Telegram Spam Info Bot, 2024-12-29, 1 day penalty:
    • Liebe® Rolf, ich befürchte, dass einige Telegram-Nutzer deine Nachrichten nervig gefunden und dich deshalb gemeldet haben. Diese Meldungen wurden an unser Moderatoren-Team zur Prüfung weitergeleitet und sie haben den Bericht bestätigt. Aus diesem Grund wird dein Konto bis 30 Dec 2024, 11:47 UTC eingeschränkt. In dieser Zeit kannst du bestimmte Dinge bei Telegram nicht machen, wie mit Fremden zu schreiben, die dich nicht zuerst kontaktiert haben, oder sie zu Gruppen und Kanäle hinzufügen.
    • Dein Konto wird am 30 Dec 2024, 11:47 UTC wieder automatisch freigegeben. Wenn du aber immer weiter machst und du wieder gemeldet wirst, wird die nächste Sperre länger dauern.
    • Die Suche nach Benutzernamen ist nicht dafür gedacht, neue Freunde zu finden. Die meisten Menschen mögen es nicht, wenn Fremde sie anschreiben - deshalb werden sie dich melden, wenn sie deine Nachrichten als störend empfinden. Und wenn unsere Moderatoren diese Meldung bestätigen, wird dein Konto eingeschränkt. Deshalb schreibe nur Leute an, die sich über eine Nachricht von dir freuen.
    • Es ist unerheblich was du schickst - wenn der Empfänger es nicht haben will. Es könnte ein Foto gewesen sein, ein Einladungslink oder ein Kettenbrief. Bitte sende nur Nachrichten, wenn du dir sicher bist, dass der andere nichts dagegen hat. Ganz allgemein wollen die meisten weder unerwünschte Werbung, noch irgendwelche Einladungslink zu Gruppen oder Kanäle, zufällige Fotos und vor allem nichts im Zusammenhang mit Einkaufen oder Werbung.
    • Unsere Moderatoren überprüfen alle Berichte, und blockieren dich, wenn du unerwünschte Inhalte an Fremde schickst.
  • Telegram Spam Info Bot
    • Hallo! Ich bin der offizielle Telegram Spam Info Bot. Ich bin hier, um dir zu helfen, falls dein Konto eingeschränkt wurde. Ich kann dir erklären, warum das passiert sein könnte und was du tun kannst, um die volle Funktionalität von Telegram zurückzuerlangen. Sende einfach /start, um loszulegen.
  • Telegram Spam Info Bot, 2025-03-12, 3 day penalty:
    • Leider haben einige Nutzer von Telegram deine Nachrichten als störend empfunden und sie an unser Moderatoren-Team zur Überprüfung weitergeleitet. Die Moderatoren haben die Meldung bestätigt und dein Konto ist nun bis 15 Mar 2025, 11:22 UTC gesperrt.
    • Bitte beachte, dass die Beschränkungen beim nächsten Mal länger dauern, wenn du wiederholst, was dich eingeschränkt hat und Nutzer dich erneut melden. Abonnenten von Telegram Premium haben verkürzte Zeiten bei den ersten Einschränkungen.
  • Telegram Spam Info Bot, 2025-12-05, 3 day penalty:
    • Leider haben einige Nutzer von Telegram deine Nachrichten als störend empfunden und sie an unser Moderatoren-Team zur Überprüfung weitergeleitet. Die Moderatoren haben die Meldung bestätigt und dein Konto ist nun bis 8 Dez 2025, 12:33 UTC gesperrt.
    • Bitte beachte, dass die Beschränkungen beim nächsten Mal länger dauern, wenn du wiederholst, was dich eingeschränkt hat und Nutzer dich erneut melden. Abonnenten von Telegram Premium haben verkürzte Zeiten bei den ersten Einschränkungen.
  • reddit "r/Telegram" - "Surprised banned account".

Nicegram

Resources

TeleGuard ( TGuard )

The Messenger

TeleGuard Account

  • ID is given at first installation.
  • There is no registration by E-Mail or SMS via mobile phone number.
  • You have to set a password.

Data Transfer

Filesize Limit
  • Experts told me: As of 2026-01, the size of transfered files, e.g. videos, is limited to 50 MBytes. Some other messengers, e.g. Telegram, don't have this limit.
Filesystem Path of Media downloaded with TeleGuard
  • Windows: “C:\Users\<user>\AppData\Local\TeleGuard”.
  • Android: “Internal Storage”.
    • “storage/emulated/0/Download/TeleGuard”.
    • “Download/TeleGuard”

TeleGuard "Keine Verbindung zum Server" / "No Connection to Server"

  • Membership in TeleGuard groups may cause profile blocking. If the TeleGuard team detects a TeleGuard group with special postings through chat scanning, they will likely block all profiles of TeleGuard group members, thus preventing further TeleGuard use on this device.
  • As TeleGuard isn't linked to mobile phone numbers, opening a new account on a different device should work.
  • Additionally, the device is locked for some time, i.e. 3-4 months. I.e. you can't register for a new TeleGuard ID immediately on the device. After the lock period, registration of a new TeleGuard ID is possible on the device.
  • Answer by the German TeleGuard support in 2025-05 “Wenn jemand dauerhaft diese Meldung bekommt/hat, dann wurde der Nutzer blockiert und ist für uns unerwünscht. Gehören Sie auch zu diesen 'Interessensgruppen'?” :-(.
  • reddit "r/techsupport" - "Teleguard no connection to server error" - “It happened to lots of people. You've been device-banned. A second device will connect just fine. It's your phone that they banned for whatever reason”.
  • Feedback by a user in 2025-05:
    • “Wenn man bei TeleGuard brav ist, wird man auch nicht gesperrt. Laut meines Wissens gibt es keine Server. Nur Gruppenchats sind heikel. War in einer Gruppe. Da habe sie dann arge Sachen geschrieben. Gruppe war weg und alle waren gesperrt” :-(.
    • The device was locked for some months, the TeleGuard ID was permanently blocked: “War monatelang ausgesperrt. Ja, weiß nicht wie lange es gedauert hat. Das weiß ich nicht genau. Irgendwann voriges Jahr. Ich kann es dir leider gar nicht sagen. Ich denke es war im Sommer. Monatelang ist mehr als ein Monat. Es waren drei oder vier. Wirklich keine Ahnung. Aber jetzt habe ich ja wieder TeleGuard”.
    • “Ja, ich hatte dann am PC eine ID. Aber mit dem Handy ist es viel besser. Habe eine neue ID. Habe ne neue. Die alte geht ja nicht mehr. Außerdem weiß ich nicht wie sie lautete”.
    • “Eigentlich hat ja TeleGuard keinen Zugriff auf Chats. Nur in Gruppen”.
    • “Wollte nicht am PC. Dort ging es ja. Das das Handy nicht ging, ärgerte mich. Doch, aber ich will nicht eine ID am PC. Am selben Gerät kannst du es auch nicht. Am Handy gesperrt, am PC hätte ich einen Account machen können. Wen ich am PC gesperrt worden wäre, hätte ich mit diesem PC keinen neuen Account machen können.
    • “Nein, es hat dann funktioniert. Eines Tages TeleGuard am Handy gesperrt. Nach einiger Zeit ging es am selben Gerät wieder”.
    • After some time, registration with new ID was possible on the once blocked device: “War monatelang ausgesperrt. Ja, weiß nicht wie lange es gedauert hat. Aber jetzt habe ich ja wieder TeleGuard. Habe ne neue. Die alte geht ja nicht mehr. Außerdem weiß ich nicht wie sie lautete. Eines Tages TeleGuard am Handy gesperrt. Nach einiger Zeit ging es am selben Gerät wieder. Punkt aus”.
    • Immediate new registration is not possible at the same device: “Am selben Gerät kannst du es auch nicht. Am Handy gesperrt, am PC hätte ich einen Account machen können. Wen ich am PC gesperrt worden wäre, hätte ich mit diesem PC keinen neuen Account machen können” :-(.
  • Think about selecting to set “Settings / Backup” = “Never”.
  • Think about what you post ( as message, as photo, as link ) in group chats :-(.
  • Think about staying in groups, where inadequate contents is posted, as you risk your ID even if you just “read” and not “post” :-(.

Community

Resources

  • User experiences:
    • Multiple devices:
      • “FAQ 3. Can a backup be made? A backup can be created, which is stored with a password. This password is not stored on the server. If the password is forgotten, there is no possibility of recovery. Thanks to the backup function, TeleGuard can also be synchronized with another device”.
      • “Can I use TeleGuard on several devices? To do this, go to 'Settings', select 'Backup' and then 'Create backup'. Set a password and press 'Create backup'. If you now install TeleGuard on your other device, you have the option of entering your existing TeleGuard ID and password you just set. From now on, TeleGuard will run synchronously on you devices. Tip: Backup. TeleGuard does not store your chat history on the servers. A backup function must therefore deliberately activated. ATTENTION: When changing devices or for synchronisation on several devices, a backup is absolutely necessary”.
      • If a device is synchronized with another device a first time:
        • Some messages are transfered, but not all messages.
        • Photos & files of a chat are not transfered.
      • Changes of a friend's name are not synchronized.
    • User interface.
      • Teleguard on Android: Multiple selection of messages ( for copying, deleting,..), by simply clicking on it. After the first message is selected, there are empty dots at left of the message. If you click on a dot of a message, it is added or deleted from the list of selected messages.
      • Teleguard on Windows:
        • You must right-click on every single message and select a command from menu, e.g. “Copy”.
        • Copying & pasting ( CTRL-V at TeleGuard Windows client prompt ) from Windows clipboard works both for text and graphics. So you must not save screenshots images or web browser images as files, as an intermediate step, to transfer the images by TeleGuard :-).
    • Messages.
      • Message handling. Click on a message and a menue opens.
        • You may copy messages, but just 1 message at a time. If you select more than 1 message, clicking on a message doesn't open a menu.
        • You may edit messages.
      • Sending Photos & files isn't synchronized.
        • Photos send from one device are just available in the chat sent on one device, i.e. photos & files are just available in the chat history on the device where they are sent.
        • So photos are not available on any other of the sender's devices :-(.
      • Photos received on several devices:
        • Android App: The human receiver may push his finger long time on a photo, then it is selected ( red checkmark “√”, red “1” ). At the bottom of the App, there is the icon “trash can” to remove a photo.
        • Windows App: The human receiver may right-click on a photo, select “Remove” to remove a photo received by a sender.
        • Photos sent to a receiving device may be deleted by the human sender just within a certain time after sending.
        • After some time ( an hour, a day? ), photos sent to a receiving device can'ty be deleted by the human sender, anymore.
      • Sended media files are deleted after a while :-(, even with the setting “Remove messages older than = Never”. So automatic deletion of media files after some time can't be prevented :-(. Instead there is the message:
        • “Media contents has been removed after expiration time”.
        • “Medieninhalte wurden nach Ablauf der Frist entfernt”.
    • YouTube "TeleGuard, nützliche Funktionen", 2022.
      • In opposite to the video, the deletion of messages doesn't delete the messages at the receiver.
        • So a sender must ask a receiver to delete each single message he sent, additionally.
        • And of course, if a receiver deletes a message received by a sender, this doesn't delete the message at the sender.
    • Reddit "r/TeleGuard".
    • Video problem: “Video and audio call - Just noise video, disturbed sound. Audio call the same”, with TeleGuard “Version 4.03 build 3, 30.August.2024”.
      • TeleGuard - Noise Video.
    • Update of Windows app:
      • If your counterpart's Windows computer has an outdated version of TeleGuard installed, you should proceed as follows.
        1. To be on the safe side, create a fresh backup. Be careful, either set an automatic backup or set the expiration time long enough for a one-off backup.
        2. Install TeleGuard for Windows on the Windows PC, directly from our website. The system recognizes that TeleGuard is already installed and automatically accesses the existing data and settings. The Windows version is updated automatically. You don't need to do anything.
      • At “Settings / About”, the TeleGuard version is displayed.
    • reddit "r/techsupport" - "Teleguard no connection to server error" - “It happened to lots of people. You've been device-banned. A second device will connect just fine. It's your phone that they banned for whatever reason”
  • Problem 2025-04-20.
    • I am using TeleGuard on 1) Android smartphone 2) Windows with same TeleGuard ID, with synced data.
    • There was also Teleguard installed on a BlueStacks Android smartphone simulator, running on Windows10, with same TeleGuard ID, not used for some time. I realized today, that 2 quite new contacts I have on my other 2 Teleguards, were missing.
    • It didn't help to deinstall an reinstall the TeleGuard client on the additional Smartphone, with loading the backup from TeleGuard cloud. The 2 contacts were not restored by the backup, though the option is “daily backup”.
    • I added the contacts.
    • Both profiles accepted the friendship request.
    • But by that, the communications didn't work properly, i.e. received messages looked like “data garbage”, just full of special characters.
    • Solution #1: I added the contact again, though the contact was still active in my TeleGuard profile.
    • Solution #2: The contact deleted the message history :-( and - this is mandatory with TeleGuard after deleting the message history - added me as contact again.
    • TeleGuard - Message Garbage.
  • Problem 2025-12-16:
    • Trying to add a profile by “Kontakt hinzufügen. TeleGuard ID eingeben”, which is already a profile.
      • Android app: “Kontakt XXXX bereits hinzugefügt. Zum Profil” :-).
      • Windows app: “Diese Funktion ist nicht verfügbar. Die App-Version Deines Gesprächspartners unterstützt diese Funktion nicht” :-(.
  • Question to the TeleGuard support:
    • In the Windows10 settings “Firewall & network protection / Allow an app through the firewall”.
    • On a Windows10 PC with properly working TeleGuard, there is no “TeleGuard” item, though most/all other Windows apps appear there. How can this happpen?

Tellonym

Tencent ( QQ, WeChat )

QQ

WeChat

  • WeChat.
    • The Web WeChat ( Login at login.weixin.qq.com ) requires a mobile device equipped with photo camera and with working “WeChat” :-(.
      1. Open the website Web WeChat with your web browser ( e.g. Firefox ) on your desktop computer, running Windows, Linux,...
      2. Execute the WeChat function “Scan QR Code” and scan the QR code on the website. Do not use other external QR scanner applications - Attention: You can´t establish a WeChat connection by scanning the QR code by an external QR scanner application and typing in the URL at your browser!
      3. By magic, now on the web browser of your computer, the WeChat application starts as browser application.
    • WeChat FAQ, WeChat Mobile FAQ - “WeChat ID is your unique name that friends can search for to find you. Wechat ID can be changed once only. Nickname is your primary name shown to other WeChat users, and it can be changed as often as you like”.
    • 1Tutorials "How to change WeChat ID".

Resources

Threema

  • The secure affordable, but commercial messenger Threema.
    • 2 desktop apps:
      • Threema.
        • Google Play, Threema GmbH "Threema. The Secure Messenger".
        • Windows installs this Windows App in a dirctory in the folder 
          C:\Program Files\WindowsApps
        • , e.g. 
          C:\Program Files\WindowsApps\Threema.Desktop.Consumer_2.0.61.0_x64__cvh4qa9n1gk2r
        • However, the executables “ThreemaDesktop.exe” and “ThreemaDesktopLauncher.exe” can't be executed, so they can't be copied as shortcut on the Windows Desktop. So Threema can't be started from an Icon on the Windows Desktop background. Error message “Windows cannot access the specific device, path or file. You may not have the appropriate permissions to access the item” :-(.
      • Threema Work.
  • Threema displays the status “inactive” for inactive Threema contacts.
  • Urgent advice:
    • Add E-Mail and smartphone numbers as secondary communication channels :-).
    • Else you might be unable to reinstall your Threema app on other devices, to use “Threema-Safe” or continue using Threema after an update :-(.
  • Warning message after installation on a second smartphone:
  • Session on Windows client.
    • You must create a “Session” on your Threema Windows client.
      • 2026-01: “Threema can now be used on this computer ( even when your mobile device is turned off or isn't connected to the Internet ) :-).
      • 2024: If you restart your Threema Windows client, i.e. close the Windows app, restart Windows, start Windows new next day, you have to “reconnect”, by message “Session closed. To reconnect to your previous session, please enter your password” and press button “Reconnect”.
      • 2024: Your smartphone must be online all the time during using your Threema Windows client :-(. You may close the Threema app on your smartphone, but you can't shutdown your smartphone :-( :-(. If you shutdown your smartphone, there are error messages on the Threema Windows app.
        • “Connection problems. Waiting for app wakeup”.
        • “Device Unreachable. Unable to reconnect to your device … Is your mobile device connected to the internet? Is the Threema app started? 3Is Desktop/Web enabled in the Threema app? It may help to unlock your device or connect it to a charger. Your device may be affected by Push Notification issues. See the FAQ articles for Android and iOS for troubleshooting”:-(.
    • After an update of the Windows app, the user is forced to use to scan a QR code with the smartphone Appm by the message “Scan this QR code with your Threema app ( Android: Menu > Desktop/Web | iOS: Settings > Desktop/Web ). If you want to avoid this QR-scan after restarting Threema, please enter a password before scanning”.
      • That's bad if the smartphone app is installed on a smartphone simulator on the same PC :-(, e.g. on the “BlueStacks” smartphone simulator.
      • So the user must have installed the smartphone app on his smartphone :-(, permanently :-(.
  • Threeema FAQ "Outdated desktop app" - “On macOS and Windows, the desktop app automatically receives updates, which include improvements and bug fixes. If the error message “App Is Not up to Date” appears, the desktop app hasn’t been updated for more than 120 days. In this case, please update the app manually by downloading and installing the newest version of Threema or Threema Work”.

Tiktok

The Service

Tiktok TV

Resources

  • The messenger is often called briefly “toe”.
  • “Messages cannot be sent since this user isn't following you” :-(.
  • Login on BlueStacks 4 ( Android 4.4.2, SDK 19 ) is refused by the error message “You are visiting our service too frequently” :-(.
  • 2023-12 Browser interface, I got a message ”[This message type isn’t supported. Download TikTok app to view this message.]” :-(.
  • EN.Wikipedia "BookTok".

TorChat

Tox

uTox

  • GitHub "uTox".
    • uTox, Archive.org "uTox" ( - 2019-12-19 ).
    • uTox is a “light” Tox, single-file-ready-to-go, without installation on Windows.
    • Using uTox doesn´t require a login password by default. At “uTox Settings / Show password field”, you may set a password.
    • As of 2018-02, there is no menu option to export a .tox profile :-(.
    • uTox accepts Tox IDs with broken lines :-).

qTox & aTox

  • Tox - “The idea was to create an instant messaging application that ran without requiring the use of central servers. The system would be distributed, peer-to-peer, and end-to-end encrypted, with no way to disable any of the encryption features; at the same time, the application would be easily usable by the layperson with no practical knowledge of cryptography or distributed systems”.
    • Tox "Clients".
      • qTox
        • “qTox is a powerful client based on Qt, with an intuitive and feature rich user interface as well as a fast core written in C++. qTox runs on Windows, Linux, MacOS and FreeBSD and offers text messagging, audio and video calls, screen sharing and file transfers. Additionally it has support for text and audio group chats as well as Identicons as avatars”.
      • Google Play "aTox" for Android.
        • “Create a Tox profile or import an existing Tox save”.
          • Android Smartphone:
            • Works fine if the Tox profile ”<username>.tox” is transfered by USB stick :-).
          • BlueStacks & Android Smartphone:
            • Works fine if the Tox profile ”<username>.tox” is downloaded e.g. by a URL by browser :-).
          • BlueStacks:
            • If the Tox profile file ”<username>.tox” is transfered by MediaManager, it is visible in the filesystem for MediaManager and “ES File Explorer”, but invisible for the file manager of “aTox” :-(. This is also true, if the original file was transfered in a ZIP archive, and decompressed by “ES File Explorer” :-(.

Resources

ToxID
  • You need a “ToxID” to add a contact.
  • After you added a contact by “ToxID”, the screen name of the new contact is the ToxID.
  • However, after adding the contact, the “Public key (not ToxID)” listed in the profile of your contact, is different :-(.
  • So if you change the screen name, the “ToxID” is lost :-(.
General
  • Reddit "Any way to use one ID on multiple devices?", 2018.
    • “In some clients you can export your ID. This will create a .tox file. If you then copy the file to another device and import the ID (supported on some, not all, clients) you will be able to use the same ID on both devices”.
    • “You can just copy your .tox file to another device, but then you can't be online on both of them at the same time. I would recommend using a separate profile on each device”.
  • Reddit "Antox to uTox", 2016.
    • “In Antox: Swipe right > profile > export profile > select directory. That will export your .tox profile file to the selected directory. From there transfer it to your pc. I know you can import it using qTox, but for uTox the instructions will be different”.
    • “Wait for toxcore to officially support multiple devices”.
aTox
  • My experience in 2024-06:
    • In opposite to Windows client “qTox”, you may not modify the screen name of contacts.
    • There are two 4-digit hexadecimal tuples, which are taken from the start of the Tox ID, displayed in the contact list on the right side of an account. If the contact name is still “Unknown”, these tuples are the only chance to identify a profile.
  • Android client “aTox” is much less comfortable than the Windows client “qTox”.
qTox
  • My experience in 2018-01:
    • With the Windows edition, by mouse-rightclick, there is the menu option “Save chat log” to save the chat messages. Indeed, chat messages are not lost, if you quit qTox. You may “Clear displayed messages” anyhow :-(. Not true anymore in 2024-06 :-).
  • Files ( e.g. photos ) sent by messenger are not available both on the sending and receiving messager anymore, if you quit the messenger and then run it again :-(. So you must save files before you quit a session :-).
  • Using qTox requires a login password. So your chat messages might be low-level protected, against against non-computer expert who gets brief access to your computer.
  • qTox doesn´t accepts Tox IDs with broken lines :-(, you must provide an ID as single-line String.
qTox Circles
  • You may organize your contacts by dividing them, i.e. by putting them into different groups ( “Circle”, “Freudeskreis” ).
qTox Conferences
  • “Currently, only friends who are online can be invited to a group chat” :-(.
qTox & aTox: Profile Locations
  • GitHub "qTox / qTox" - "Profile".
    • Located under ~/.config/tox/ on *nix, in \%APPDATA%\tox\ on Windows XP, (\%APPDATA%\Roaming\tox\ on Windows 7 and 10), and ~/Library/'Application Support'/Tox/ on OS X.
    • “To easily open that location, click on your avatar picture, and then in the bottom of the configuration screen, click 'Current Profile location: .....'”.
    • “When copying your profile to a new instance of qTox (be it portable or installed mode), the %username%.tox file contains the contact list and is most essential. The %user%.ini and qtox.ini files contain user-determined configuration data. The \tox\avatars\ directory can also be moved to the same folder as the new profile location, to retain your user avatar as well as those of your contacts”.
    • “qTox supports portable mode, which can be enabled in advanced settings. Portable mode saves & loads profile & settings from the working directory, i.e. from where qTox has been launched”.
      • Standard location: “C:\Users\<user>\AppData\Roaming\tox”.
      • Portable location: “C:\Program Files\qTox\bin”.
      • In the Windows app, at the user profile, the current location is named, e.g.:
        • Current profile: “hemmerling.tox”.
        • Current profile location: “C:\Users\Administrator\AppData\Roaming\tox”.
      • User experience: Chat is saved at the current location, i.e. at the standard location or at the portable location. If you switch, you see just the past chat history from that location.
      • User experience: qTox may be installed on a USB stick. The chat history is then stored on the USB stick.
qTox & aTox Profile Transfer: Windows to Android
  • Import the ”<username>.tox” file from Windows computer via USB stick to the “Download” folder of Android smartphone.
  • Under Windows you can / must set a password so that the saved profile “hemmerling.tox” is loaded. Short password.
  • You may set a password for the Windows client “qTox” and the Android client “aTox”. A given password is transfered by an installation of the profile on another device. So when installing the profile from a Windows client with activated password protection on an Android client, the password is requested one-time during import, and then later after each new start of the Android client!
  • The language of the Android client “aTox” is the Android system language, so German on an Android with German as system language.
  • At start, all contacts of the transfered profile are named “Unknown” ( German: “Unbekannt” ). If a contact is online, the name of the contact is changed to the original profile name given by the owner of the profile, permanently.
qTox & aTox Profile Transfer: Windows to Android on BlueStacks
  • Prerequisites:
  • Find the import location in the filesystem:
    • Import the ”<username>.tox” file to Bluestacks via MediaManager.
    • In the MediaManager, the new file is both listed at the visual folders “Imported Files” and “Explore”.
    • The “Explore” folder MediaManager is at “sdcard/DCIM/SharedFolder”.
  • Use the “ES File Explorer”:
    • To inspect the properties of the file.
    • To copy or move the file to a location of the filesystem known to the import function of “aToc”, e.g. to “Download”.
  • Failure.
    • No matter wether you import the ”<username>.tox” file as original file, or archived in a zip file, both the .tox file and the .zip file aren't listed by the aTox file explorer :-(.
qTox & aTox: No use of Tox with same single ID on several Devices
  • With Skype, all messages are sent to all devices with same Skype ID, both of messages received from contacts and messages sent by the profile owner himself from one of the devices with same Skype ID. This isn't true for Tox.
  • I was told by experts: You can't be online with several devices and same Tox ID at the same time, i.e. no concurrent use.
  • My Experience: The device with same Tox ID, which successfully connects, keeps the connection.
    • So it might be, that one device is online and looking for connection to a contact to send it a message, for some time. It fails and so repeats to build a connection on and on. So the human user at the sending device sees the Tox sandclock symbol.
    • Now supposed after a while a second device starts looking for connection to the same contact to send it a message.
    • When then later the contact is suddenly “online” and so is able to receive messages from the sender with several devices with same Tox ID, one of the devices with same Tox ID will be “winning”. The “winning” device keeps the connection permanently, the other devices don't get any message from the contact, nor can they send messages to the contact, successsfully.

TriLLian ( formerly: TrillianASTRA )

VIPole

  • VIPole ( Promotion Code ) for Windows, Linux, MacOSX, Android, iPhone - “Secure messaging, video, calls and sharing”.
    • “Length of secret phrase must be more than 8 symbols. Secret phrase must differ from password”.
    • Smartphone App has the option ”[x] Show deleted records” for each chat partner :-). I didn´t find that with the Windows App :-(. The Smartphone App displays deleted records by the italics text ”Deleted”.
    • Windows App has the general option “Files / File storage options” :-). I didn´t find that with the Smartphone App :-(.
    • The Windows App has a seach function for the chat with a chat partner :-), both in standard mode and history mode. For the Smartphone App, you have to switch into the “History” mode for searching.
    • Images are saved e.g. at “C:\Users\Administrator\.vipole\myName@vipole.com\files\contacts\senderName@vipole.com\incoming\2023\05”.

Viber ( ID = Mobile Phone Number )

  • Viber for Windows.
    • Viber 4.2.1 crashes on my Win7 computer with XP2400 CPU...
  • Google Play, Viber Media S.à r.l.Kommunikation "Viber Messenger".
  • You may activate both one smartphone as “premier device” and one “secondary device”, e.g. a PC Desktop.
  • As of 2019-04, I am unshure if you may run “Viber” on three devices...
  • Your mobile phone number is your ID!

Webchat

WEB.DE MultiMessenger

Webphone

  • Webphone
    • Webphone - free softphone for Windows.
    • Netspeak Webphone - discontinued commercial softphone for Windows. I got installed the “LITE” version (with unlimited connection duration, but connects to 1 line only at a time), activated by the license key distributed with CREATIVE SOUNBLASTER cards.

WhatsApp ( ID = Mobile Phone Number )

The Service

Direct Download & APK Download

Android APK
Windows

Backup & Dataexport

Backup
Export of WhatsApp Chat, with and without Media
  • WhatsApp provides export option of all chat, even with media ( unique selling proposition! ):
    • “Burger Menu ( Settings ) / More / Export chat”, options “Without media” or “Include media”.
Location of Whatsapp Audio Files
  • Heise "WhatsApp-Audios speichern - so geht's" - Wrong filepath for Android 13, Whatsapp 2.25.16.82 ( of 2025-05 ) :-(.
  • Google Support "Unable to see WhatsApp folder in files", 2023-06 - Wrong filepath for Android 13, Whatsapp 2.25.16.82 ( of 2025-05 ) :-(.
  • Filepath for Android 13, Whatsapp 2.25.16.82.
    • “Internal Storage / Android / media / com.whatsapp / WhatsApp / Media / WhatsApp Audio” - Received WA audio files are not stored here :-(.
    • “Internal Storage / Android / media / com.whatsapp / WhatsApp / Media / WhatsApp Voice Notes”.
      • There are many folders, e.g. folder “20226”, many files e.g. “PTT-20220130-WA0000.opus” ( of 2022-01-30 ), but most with 0 bytes :-(.
      • I installed Whatsapp fresh on an Android smartphone. It is unclear if I must play each voice message to get a download into a new (?) folder with subsequent number, and audio files stored into it.
        • On my own smartphone, folders “202407”, “202409”,... contain audio files.

Editing of Messages

  • WhatsApp FAQ "How to edit messages".
    1. There is a 15 minute time limit for editing messages.
    2. Editing a message won't send a new chat notification to people in your chat.
    3. You can't edit photos, videos, or other types of media.

Visibliy of the profile

  • If you add a WhatsApp phone number to your smartphone contacts, you may then just address the profile by an introductory message, if the visibility of a profile is set to “Everyone”:
    • “Settings / Privacy / Last seen and online”:
      • “Who can ssee my last seen” = “Everyone”.
      • “Wo can see when I'm online” = “Everyone” / “Same as last seen”.

Multiple Devices

Additional third-party ( Smartphone ) Tools

Warnings

  • Warning ”+XXX hat die Telefonnummer geändert. Du chattest gerade mit dieser neuen Nummer”.

Resources

Wickr ( Wickr Me, AWS Wickr / Wickr Pro )

AWS Wickr - The Business Messenger

Wickr Me ( Discontinued Service )

Support

  • Wickr Support.
    • “Submit a request” ⇒ “Please email your local Wickr Admin for assistance. If you are an admin, please contact AWS Support through the AWS Console.
  • ”Please email wickr-support@amazon.com for assistance”.

Setup, Suspension, Lockout

Resources

  • AWS Wickr uses the original installation language of the Windows operating system. So with a German Win10Pro, Wickr has German user interface, even if the “Windows Display Language” of Win10Pro is set to “English (United Kingdom)” :-(.
  • Message after installation of Wickr app / application on a new device: “We like privacy too, so for privacy reasons your conversation history will not appear on this device, but all future conversations will” :-(.
  • Amazon Web Services ( AWS ) "AWS Wickr".
  • Wickr Support "What’s the difference between AWS Wickr and Wickr Me".
  • Wickr "Wickr Pro - Migrate to AWS Wickr" - “Wickr Pro will be discontinued on January 31, 2024. In November 2022, we announced the general availability of AWS Wickr — a new version of Wickr Pro that offers additional features”.
  • Wickr "Product Feature: Burn-on-Read and Expiration Timers".
    • Expiration Timers. Expiration timers dictate how long after a message is sent that it will be deleted.
      • In Wickr Me, expiration timers can be set to anywhere from 6 hours to 6 days.
      • In AWS Wickr you have a wider range of options, with settings anywhere from 6 hours to 30 days.
  • Wickr Support "Wickr Open Access" - “The Wickr Open Access feature's goal is to hide your connections to Wickr services. It’s more of a masquerading technique that provides anti-censorship/anti-blocking by making traffic look like it’s associated with certain ports & protocols that are not restricted”.
  • Wickr Support "What does 'Out of Network' Mean?".
  • Wickr Support "What is a Wickr ID?" - “Your Wickr ID is a unique username that you use to sign in and communicate with friends. It can be between 4 and 16 characters and should not be an email address (which is only used in Wickr Pro). Your Wickr ID cannot be changed, but you may always create a new account if you need a new one”.

Wire

The Service

Resources

  • The text font for messages is very-very small, smaller than with other messengers.
  • Negative customer feedback:
    • Text font size.
      • Even with a 6.5” smartphone display, people with glasses have problems to read the text. I some cases this causes many typing errors, as the coordination of character input and recognition what was really typed with the too-small on-display keyboard, is likely to fail.
      • There is no option to increase the text font size.
      • Workaround: Use a special smartphone input pen to enter the text. This leads to much less typing mistakes :-)
    • Self-deleting messages ( “Selbstlöschende Nachrichten” ) after 24h :-(.
    • Storage of personal informations:
      • Account owner: You may modify the screen name by adding few informations about hobby or profession. There is no other option to add a personal statement. I.e. there is no “profile” like with other messengers.
      • Contacts: There is no option to change the screen name ( display name ) of a contact. There is no option to add a personal commment.
  • Wire Support "Back up your conversation history", Wire Support "Gesprächsverlauf sichern" - “Sie können Ihren Verlauf jederzeit und auf jeder Plattform aus einem Backup wiederherstellen, beispielsweise eine Sicherungsdatei auf Ihrem Desktop erstellen und diese auf Ihrem Android-Gerät wiederherstellen”.

Yahoo Messenger, Yahoo Squirrel

Yahoo Messenger

  • Yahoo Messenger ( "Full" Download ).
    • Yahoo Messenger - Build number of the current release ( e.g. “Click Download Now to begin downloading and installing Yahoo! Messenger 11.5 ver. 11.5.0.228” ).
    • Yahoo Messenger 10.0.0.1270 is the latest release for W2k ( and maybe even for Win98SE ).
    • Yahoo Messenger 11.5.0.228 is the latest release for computers with PentiumIII CPUs, for Win7. Yahoo discontinues it's services with this version as of 2016-08-30 :-(.
    • The new “Yahoo Messenger 0.8.109” ( of 2016 ) may just be operated on computers with PentiumIV CPUs on Win7 / Win8 / Win10,...
    • “Yahoo! Messenger for the Web service”.
    • Yahoo! Voice.
      • Free calls to 1-800 telephone numbers of the US telephone grid.
      • Free phone-in telephone number in USA, UK, France.
  • Yahoo Help "Yahoo Messenger will be discontinued", 2018-07-17.
    • Yahoo Messenger will no longer be supported after July 17, 2018. Until then, you can continue to use the service normally. After July 17, you'll no longer be able to access your chats and the service will no longer work. Read our FAQs below for more info on what this means for you.
    • Is there a replacement product for Yahoo Messenger? “There currently isn’t a replacement product available for Yahoo Messenger. We're constantly experimenting with new services and apps, one of which is an invite-only group messaging app called Yahoo Squirrel (currently in beta). You can request an invite at squirrel.yahoo.com”.

Yahoo Squirrel by Oath

Resources

  • Though you may withdraw a message ( as with Whatsapp, Telegram, Skype... ), it might be read by the receiver, though it isn't marked as “read” ( 2 blue checkmarks with Whatsapp, Telegram,..): There might be an active smartphone message notification on the receiver's smartphone, with prompts a brief preview of the message on the smartphone screen :-(.

Web Messengers

Android Browser
Web Messengers Firfox Brave Chrome DuckDuckGo Microsoft Edge Canary Microsoft Edge Opera Yandex
Teams ( Web ) “Hmm. Your brower version isn't supported” :-(
Telegram ( Web ) √
WhatsApp ( Web ) “Use WhatsApp Web by going to web.whatsapp.com from your browser on your computer”, “Message privately. Download” :-(
Wire ( App ) “Wire doesn't support this browser. To use Wire for web, download the latest versio of Google Chrome, Mozilla Firefox, or Microsoft Edge” :-(
Tinder ( App ) √

Recommened Internet Messenger / Telephone / Videophone Clients suggested for secure Business

  • Threema.
  • ginlo ( formerly: SIMSme ).
  • Wire.
  • Stashcat.

SMS Messenger Software

Internet Audio & Video Conferencing Systems

Secure Chat & Audio

  • MEGA - “MEGA brings cloud storage, file and folder sharing, chat, meetings, and more — together into one place”.
    • Chat and audio calls.
    • 2025-12: “Your browser doesn't support MEGA calls. Install one of the supported browsers: Chrome, Oper, or Edge” :-(.
    • 2026-01: Firefox browser is supported, again :-).
    • User experience: “UserXXX Cleared the chat history”.

Internet Audio and Video Conferencing Systems

Webcast, Webinar and Online Conference Services

  • The commercial Adobe Acrobat Connect Pro.
  • The commercial Arkadin ( Anywhere Conferencing login ).
  • The commercial AT&T Unified Communications ( formerly: Interwise ).
  • The commercial BeamYourScreen GmbH ( Login ).
  • The free BrightTalk.
  • Citrix Online.
    • The commercial GoToMeeting.
      • The commercial GoToWebinar.
        • Warning: If you come to early to a GoToWebinar webinar, then you get a message to come back later. Important, you must enter the original URL again to try next time. Pressing the “Reload” button of your browser does *NOT* direct you to the webinar :-(.
  • edudip - Plattform für live Online-Seminare, Webinare, Germany - Both for free and commercial webinars and online seminars.
  • The commercial GatherPlace.
  • Grovo - Your Field Guide To The Internet - “Thousands of video lessons covering Internet products you love or didn't know about”.
    • Blog The Grovo Blog.
    • Free online course system with tutorial videos, quizzes, certifications.
    • No free and not even an open payable authoring account ?!
  • Hotconference.
  • Imparare "Webinarsoftware" by Sven Meier, Work Improve Services LTD.
    • “Mehr Umsatz und Reichweite mit dem mächtigsten Marketing-Tool. Automatisierte Webinare und Video-Sales-Letter sind das mächtigste Marketing-Tool auf dem Markt. DENN: Es ist extrem leicht und viel einfacher als die meisten Menschen da draußen erzählen mit Webinaren durchzustarte”.
  • The commercial communications server Microsoft Lynx.
  • The commercial microdrops by micdrops UG (haftungsbeschränkt), Germany - Free limited basic service ( 20min, with a maximum of 3 guests ).
  • The commercial myCOACH - “Marktplatz und Plattform für Online Schulung und Online Beratung”, with some free webinar events by webinar providers.
  • Netviewer AG "netviewer meet", "netviewer support" for Windows - free for private use.
  • The free ?Zoom-alike? online conference system Starten Sie jetzt Ihre Videokonferenz! sicher, kostenlos und ohne Anmeldung ( sichere-videokonferenz.de ) by Horizon44 GmbH, Germany.
  • Spreed by struktur AG - “Free Spreed meeting room for free web meetings with up to 3 attendees” :-).
  • The commercial WebEx ( Offline media player, Channel Wolves Meeting Center ).
  • The commercial Wonder – Online events that are fun - Online meeting tool.
  • The commercial Zoom, Zoom - Online meeting tool, with free basic service.
    • Zoom "Pricing" - Download of the free Zoom client software.
    • Google Play "ZOOM Cloud Meetings".
    • Operation:
      1. Zoom Windows program, Zoom smartphone app.
      2. Chrome browser. Advantage: As there is anonymous login, you may not be excluded - by the Zoom conference organizer - by the registered E-Mail of your Zoom account :-). By deleting the browser cookies, you may reset your exclusion state.
    • Your Basic Plan includes:
      • Unlimited number of meetings (one meeting at a time)
      • No expiration date
      • No time limit for 1-on-1 meetings
      • 40 minute limit on meetings with 3-100 people.
    • Guiding Tech "How to Show Pro­file Pic­ture Instead of Video in Zoom Meeting", 2020-04-11.
      • The instructions don't work with the Windows client of Zoom of 2020-04.
        • There is no option “Edit profile Picture” at right-mouseclick :-(.
        • The profile picture uploaded at the Zoom website doesn't replace the video, if video is stopped :-(.
    • There is the option to upload and display a background picture, button “^” right of the video symbol, at the bottom :-).
    • How to implement multi-room events:
      1. The organizer creates all rooms as “host”. During the event, he must not login.
      2. If the organizer wants to participate in the meeting, he needs a second account.
      3. Both the audience and speaker may enter the rooms, by the option “The audience may enter the room before the host enters the room”.
      4. If the organizer logs in by fault as “host” and enters a room, none of the audience may enter a room anymore. Error message “The host has another meeting in progress” :-(.
    • What is needed to participate in a Zoom meeting?
      • You either have to install the OS ( Windows...) desktop app, or the smartphone app ( Android,...) app.
      • You may use CHROME browser on desktop PCs, without further installation.
    • Recordings.
      • Zoom Support "Cloud recording" - “Cloud recording is automatically enabled for all paid subscribers. When you record a meeting and choose Record to the Cloud, the video, audio, and chat text are recorded in the Zoom cloud. The recording files can be downloaded to a computer or streamed from a browser”.
      • Zoom Support "Recording on iOS and Android" - “It is not possible to record locally from an iOS or Android device” :-(.
    • Zoom "How to Keep Uninvited Guests Out of Your Zoom Meeting".
  • Webinar Jam - “The Premier Webinar Solution‎”.
    • Especially there are templates for landing pages and webinar registration :-).
  • Webinaris - “Die perfekte Lösung für automatisiertes Webinar-Marketing”.

Webcam Services

Webcam Services and Webcam Software

Peer-2-Peer (P2P) Networks

  • Pango -free P2P network software.

Internet Location Server ( ILS ) & User Location Service ( ULS )

  • VideoFrog - NetMeeting Server Directory, Cu-SeeMe Reflector Directory.

Telephone Servers for POT and VoIP

Telephone Number Databases - Telephone Books

Chat & Internet Relay Services, Internet Relay Clients ( IRC )

Telephony Services

Resources

  • DIE ZEIT "GCHQ. Britischer Geheimdienst spionierte Millionen Yahoo-Webcams aus", 2014-02-27 - “Der britische Geheimdienst GCHQ hat einem Zeitungsbericht zufolge jahrelang Bilder der Webcams von Yahoo-Nutzern abgegriffen. Das Programm mit dem Code-Namen Optic Nervehabe von 2008 bis 2010 Standbilder aus den Webcam-Chats des Internet-Konzerns gespeichert, berichtete der britische Guardian”.

Forums, Newsgroups

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