I copied the following from alt.machines.cnc:
"The website links
to vendor web-sites offering free 2D/3D CAD, CAD/CAM, FEA, Thermal
Analysis S/W and other mechanical utility programs for downloading. The
site does not distribute any software, but describes the applications
(with screen-shots) and where they can be downloaded from.
Karl"
Most are demos with save disabled but it a nice list of links anyway.
Rich