LibrePCB - LibrePCB is a free EDA software to develop printed circuit boards.
XCircuit - XCircuit: Home Page
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.
OmniGlyph - Powerful and easy-to-use PCB Design package
JSchem - Free Cross-Platform Schematic Editor