Logisim - Logisim is an educational tool for designing and simulating digital logic circuits.
BOOLR - Open-source digital logic simulator
Digital - A simulator for digital circuits.
Logicly - - Design circuits quickly and easily with a modern and intuitive user interface with drag-and-drop...
Digital Logic Design - Digital Logic Design is a Software tool for designing and simulating digital circuits.
Atanua - Atanua is a real-time logic simulator, designed to help in learning of basic boolean logic and...