VectorWorks, Fundamentals, Architect, Landmark, Spotlight, and Designer are affordably priced, cross-platform CAD software programs for architecture, landscaping, civil...
Design Power provides software that makes automation of proposals and design documentation of custom products feasible
12CAD.com is the best place to learn about Computer Aided Design. Step by Step AutoCAD tutorials and more to kick start your CAD learning journey
QCAD is a free, open source 2D CAD system for Windows, Linux and Mac.