Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
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.
FreeCAD - An open-source parametric 3D modeler