CadSoft's EAGLE CAD is our curent electronic CAD system of choice. It's not FLOSS, which is sad, but it is fully featured and lets us get done the work we need to do. It's free for 2 layer small boards, and most importantly it's cross platform (Linux/Mac/Windows). It's the best bet out there, despite some deep UI and library handling flaws.
- Also see our avionics team workshop notes on EAGLE: 2003-01-28, 2006-02-15
- Also our 2006 EagleCadWorkshopNotes
PSAS EAGLE libraries can be found in the 'avionics-cad' git repo.
Also see the eagle-library-tool, a tool to help manage EAGLE libraries better than the awful EAGLE library manager.
Scripts and other EAGLE files
Scripts, user language programs, and design rule files can be found 'avionics-cad/eagle'.