Logisim - Logisim is an educational tool for designing and simulating digital logic circuits.

LabVIEW - LabVIEW offers many of the functions you'd find in a traditional script-based programming language presented in a more intuitive visual interface ideal fo engineering.

Logicly - - Design circuits quickly and easily with a modern and intuitive user interface with drag-and-drop...

myOpenLab - MyOpenLab is a platform for finished elements (program components) that can be linked together.

Digital - A simulator for digital circuits.

itom - itom is an open source software suite for operating measurement systems, laboratory automation and...