DraftSight – Free CAD software | Cnet.com
DraftSight is a professional-grade; open 2D CAD product for users who want a better way to create, edit and view DWG files. You can start sharing, connecting and interacting with the 3DSwYm DraftSight community members. DraftSight can be used to create 2D drawings, update and maintain .dwg and .dxf files, create PDF files, and exchange files with companies who either provide or require data saved in either .dwg or .dxf file formats.
Full review: http://www.dedoimedo.com/computers/draftsight.html