FidoCADJ - FidoCadJ is a free user-friendly vector graphic editor for Mac OS X, Linux, Windows and Android.
Pspice - OrCAD PSpice technology provides the best, high-performance circuit simulation to analyze and refine your circuits, components, and parameters before committing to layout and fabrication
LibrePCB - LibrePCB is a free EDA software to develop printed circuit boards.
Oregano - oregano - An electrical engineering tool for GNOME
JSchem - Free Cross-Platform Schematic Editor
PCBWeb - PCBWeb is a 100% free Windows desktop CAD application for designing and manufacturing electronics...