Grasshopper 3D - Grasshopper™ is a graphical algorithm editor tightly integrated with Rhino’s 3-D modeling tools.
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
DYNAMO BIM - An open-source platform for computational design and for building information modeling (BIM).
RealityMAX - RealityMAX is the most powerful free 3D design collaboration platform, 100% online. Cooperate remotely with your colleagues on 3D projects and easily share your work with clients. Create Web3D and AR experiences in a snap, without a line of code.
Houdini - Houdini covers all the major areas of 3D production, including:
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.