SketchUp - 3D for Everyone
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
SmartDraw - Instead of starting with a blank screen, SmartDraw gives you the exact template you need.
CADMAPPER - Instant CAD files for any location on earth
SolidWorks eDrawings - SolidWorks offers complete 3D software tools that are easy to learn and use, and work together to help you design products better.
MAPACAD - MAPACAD is an online website that is providing leverage to designers and architectures to have the ability to download CAD map cities that can be directly used in their projects.