Computer Aided Design (CAD) is a computer technology for simulation,designing, Documentation of construction, Engineering and manufacturing related Models. CAD software is free to Download , No Subscription, No fees. The DraftSight(CAD) software is compatible on Windows, MAC, Linux.

The features of the DraftSight are:
- Drawing toolbar contains many shape tools like circle, rectangle, rhombus, etc
- The project can be done on Layers, If the design have 100 layers and each layer has its own design we can alter each layer separately so that the other layers won’t be disturbed.
- You can create Accurate Photo simulations
- You can import and Designs in Standard Drawing Formats which includes dwg, dxf, dwt formats
Download DraftSight
CAD Learning Resources :
- http://goo.gl/xOGvJ
- http://goo.gl/wHuXi

Seriously free for download? Wow, thanks. It’s really very useful for those involved in CAD.