LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Autodesk AutoCAD - Autodesk AutoCAD is a commercial computer-aided design (CAD) and drafting software application.
DraftSight - Discover Dassault Systèmes®' DRAFTSIGHT™ Professional CAD software that lets you create, edit, view and markup any kind of 2D drawing. Learn more here.
CAD 6 - CAD Software and Plug-Ins for Windows 10/8.1/8/7, Training, Consulting, Internet, Software Development
BricsCAD - A powerful CAD platform, with features familiar to you from native .dwg applications.
FreeCAD - An open-source parametric 3D modeler