Dave Lyon wrote:

I'm not sure of all the details, but it looks like Solid Works is allowing a
personal version of their software to be used for free as long as it's not
for commercial use.

http://www.solidworks.com/pages/news/3DSkills.html

In my opinion, a somewhat lame response to Alibre's
free Design Xpress.

http://www.alibre.com/xpress/