Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
PixiJS - Fast and flexible WebGL-based HTML5 game and app development library.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Osmond PCB - Design printed circuit boards software
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.
Solve Elec - Solve Elec is a free educational program to draw and analyze electrical circuits.