Digital - A simulator for digital circuits.
LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.
Offset - Premium stock photos + illustrations
BOOLR - Open-source digital logic simulator
Android Survey Developer - Android Survey Developer lets you create industry strength mobile surveys for Android, by developing on your Windows desktop
Logicly - - Design circuits quickly and easily with a modern and intuitive user interface with drag-and-drop...