KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
Fritzing - Fritzing is an open-source initiative to support designers, artists, researchers and hobbyists to...
EasyEDA - EasyEDA - Web-based EDA suite; runs in browser.
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.
Altium Designer - PCB Design Software
LibrePCB - LibrePCB is a free EDA software to develop printed circuit boards.