SUMO is a microscopic, multi-modal traffic simulation.
PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
A library for scientific data visualization
Plug&Play Hardware simulation over a virtual bus system.
Population Propogation in Python. Simulate births, marriages, deaths
Use simulation to perform statistical analyses.
A simulation program for insulin-glucose homeostasis.
Frevo is probably the simplest tool for evolutionary design
Discrete-event simulation modeling software for science and education
Digital Circuits Design and Simulation
Gradually Varied Flow (GVF) simulation.
RSSceSim - Reputation System Scenario Simulator
Electromagnetic Analysis Software
Allows you to build your own circuits and test them
GNS3 Network simulator Live USB
A framework for implementing real-time control systems
Acoustic Simulation Library for Frequency and Time Domain Simulations.
The Future of the Java Circuit Simulator
it is an implementation of A* algorithm with examples of its usage.