Bengt Mårtensson "Gnans" - “A program (and language) for the numerical study of deterministic and stochastic dynamical systems. The dynamical systems may evolve in continuous or discrete time”.
Simulation of kinematics and dynamics of planar and spatial mechanical system.
There is a free demo version with the limits: No more than five bodies, five joints and five forces of each type are supported. With registration, the demo version expires after 3 months.
In opposite to the student version, in the past the full version were activated by an “activation disk”, i.e. an activation was impossible on computers without built-in floppydisk drives .
“The Erlang-G program is a utility of use in the Voice, Call Center, or Packetized Data Network industries, to help model traffic blockage (loss), and/or delays”.
For graphical modelling, visualisation, simulation and optimization of systems and business processes.
With the free student edition of “Plant Simulation”, just for students, you can create modells with up to 80 objects! The student license allows to run the software on a single Windows computer with a certain “Volume Serial Number” ( VSN ) of the OS partition, which must be notified when ordering the product.
“GetVolumeInformation” and “SetVolumeInformation” are official Win32 API functions.
“32-bit SIMSCRIPT III trial version contains all the features as 32-bit SIMSCRIPT III Release 2 Standard version, except for the number of processes and process methods that can be activated. It is suitable for learning the product”.
“Taylor II” was developed by the US company that was originally set up by “F&H”. It eventually became “Enterprise Dynamics Inc.” Some staff in this company started development of Flexsim and released the product after the company split.
With the free demo version, you can create & store up to 30 atoms !
Once, there was a free limited “WITNESS 2006 Educational” alias “Witness XA, WIN Release”. By special personal request, it was distributed to students on CD, for free. Nowadays, please ask for a current release !
“An extensible, modular, component-based C++ simulation library and framework, primarily for building network simulators”.
“Package for Windows contains the MinGW C++ compiler”.
EN.Wikipedia "OMNeT++", DE.Wikipedia "OMNeT++" - “The software is licensed under the its own Academic Public License, which allows GNU Public License-like freedom but only in noncommercial settings”.
“Poses++ is free available software containing a licence threshold of 500 modelling elements. In case you want to handle larger models and you want to purchase licence entries, we would like to submit you an offer”.
Note that everything is an atom or enity - resources, products, datalinks, graphs etc, even the model itself. In opposite, elements are just that - machines, buffers, conveyors. So don't compare apples with oranges !
University of Applied Sciences and Arts “Fachhochschule Hannover”.
You can request a CD which contains the demo versions “Dymola 4.6a” and “Dymola 5.3a” which expire 60 days after installation. A current demo version with a “near expiration date” is available for download, too.
The free Quantum LeaPs "QP Modeler" - “Cross-platform, graphical UML modeling tool for designing and implementing real-time embedded applications based on the QP state machine frameworks”.
EN.Wikipedia "SPIN model checker", DE.Wikipedia "SPIN" - “Eines der bekanntesten Werkzeuge zur Modellprüfung (engl. Model Checking). SPIN prüft endliche Zustandsautomaten (engl. Finite State Machines) mit der temporalen Logik LTL”.
“Am integrated tool environment for modeling, validation and verification of real-time systems modeled as networks of timed automata, extended with data types (bounded integers, arrays, etc.)”.
The OpenSource SCIRun for Windows and Linux - “A Problem Solving Environment (PSE), for modeling, simulation and visualization of scientific problems”.
The commercial GoldSim “Monte Carlo Simulation Software for Decision and Risk Analysis”.