KiCad - A Cross Platform and Open Source Electronics Design Automation Suite
FidoCADJ - FidoCadJ is a free user-friendly vector graphic editor for Mac OS X, Linux, Windows and Android.
Proteus PCB design - Proteus PCB design combines the schematic capture and ARES PCB layout programs to provide a...
XCircuit - XCircuit: Home Page
EasyEDA - EasyEDA - Web-based EDA suite; runs in browser.
JumboCAD EDA - JumboCAD EDA contains 3 packages, Schematic Capture, PCB designer and Library Editor.