Cadbull - Cadbull is a website that comes with an advanced collection of CAD blocks and DWG design, facilitating architects and designers to get done with their projects efficiently.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
MakeHuman - MakeHuman is a free, open source, interactive modeling tool for creating custom 3D human characters.
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.
Bforartists - Bforartists is a fork of Blender.