Integrated Development Environment (IDE) for learning HDL
RSSceSim - Reputation System Scenario Simulator
Allows you to build your own circuits and test them
Highly realistic and immersive model for Flightgear.
A Simulator for AWA in GMAT Exam (Win and Mac)
The Future of the Java Circuit Simulator
A free automata simulator that simulates DFA/NFA/DPDA/NPDA/STM
Simulate high power rocket flights with splash down plots
Virtual paper folding program
Controller-Pilot Data Link Simulator for procedural and radar training
Simulador Educacional de Circuitos Digitales
A free chicken genetics simulator
A DLX/MIPS processor simulator
SW2PSA (Stop & Wait and Sliding Window Protocol Simulator and Animator
A quantum circuit simulator written in Scala