KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Eagle App - Unify your creative inspiration in one place. Store anything – inspiring images, design mockups, illustrations, screenshots and more.
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.
Pixave - The ultimate image organizer for the Mac.
Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
EagleFiler - EagleFiler makes managing your information easy.