DraftSight

DraftSight, a free (It's propiertary software free of charge) 2D CAD product that lets you create, edit and view your DWG (AutoCAD) files.

Based on an advanced architecture, DraftSight has a small footprint, should take less than a few minutes to download, and runs on multiple operating systems including Microsoft® Windows XP®, Windows Vista®, Windows® 7 (general release), Mac® and Linux®** (Mac and Linux currently in Beta).