LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
BricsCAD - A powerful CAD platform, with features familiar to you from native .dwg applications.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
AutoCAD LT - AutoCAD LT is a drafting tool to create 2D drawings.
FreeCAD - An open-source parametric 3D modeler
progeCAD - progeCAD is DWG/DXF-native CAD software, built for professional drafting.