A circuit simulator with graphical user interface (GUI)
Plug&Play Hardware simulation over a virtual bus system.
Integrated Development Environment (IDE) for learning HDL
RSSceSim - Reputation System Scenario Simulator
Allows you to build your own circuits and test them
Live DVD with CORE network simulator
Highly realistic and immersive model for Flightgear.
An open source process simulator
The Future of the Java Circuit Simulator
A free automata simulator that simulates DFA/NFA/DPDA/NPDA/STM
Virtual paper folding program
Ein Simulator für Registermaschinen
Ein Simulator für Turingmaschinen
A full simulator of the WRAMP CPU and REX board.
Robot simulator inspired by Sim.I.Am
Simulador Educacional de Circuitos Digitales
A free driving simulator.
A free chicken genetics simulator
A DLX/MIPS processor simulator