Here’s an open source functional footprint editor the Madparts by Andete, that is available at github:
Being somewhat annoyed with the cumbersome task of creating footprints for ICs I decided to make my own program for it two months ago.
Last Friday I finally released version 1.0 as fully open source software
Via the forum.
Looks like it only does eagle and KiCad for now, hope gEDA support will be added too?
One part library usable by all would be better though ;)
fped existed all this time: http://people.openmoko.org/werner/fped/README