FLOSS CAD

Looking for a free (as in speech) alternative to constructive solid geometry modelling, like SolidWorks ?

Well, so am I :/

FreeCAD: not free enough according to fedora's standards. That's because FreeCAD (itself under a compatible license) uses OpenCASCADE to do the heavy lifting, and they have a non free license.

http://brlcad.org/wiki/STEP BRL-CAD]:

= Importing STEP files = OSE (open source ecology) has tons of designs but many of the files (like the CEB, compressed earth brick, press) are in solidworks format. How to get to win?
 * STEPcode, by the BRL-CAD guys. [git://github.com/stepcode/stepcode.git git]

= Importing Solid works files = sldprt, sldasm - no solution yet. Use the freely available eDrawings to export?

ancient discussion at blenderartists (circa 2004)