I have put together a brief overview of free CAD software which may be of interest to people here. My hope is that it will serve as an introduction to what is available, with links to more in depth information. I welcome any suggestions for improving the overview, which can be found here:
https://sites.google.com/site/lagadoacademy/miscellaneous-projects/free-cad-software---overview
https://sites.google.com/site/lagadoacademy/miscellaneous-projects/free-cad-software---overview