- Digital Logic Simulator v0.4 - Brad-Ware Studios' free program that supports real-time edit and simulation, as well as abstracting. Include entire scenes that you have created, as a single chip.
- Atanua is openGL based software for real time designing and simulating digital logic circuits
- Hades – a framework for interactive, discrete-event based simulation.
- Simulo – Free Digital Logic Simulator
- LogicCircuit – is educational software for designing and simulating digital logic circuits.
- Deeds - free educational suite for digital logic circuit simulation and design, including finite state machines (FSM) and microprocessors simulation and design facilities.