Cdw - cdw: ncurses interface for GNU/Linux command line CD/DVD 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.
Microsol Resources - Autodesk Platinum Partner providing BIM & CAD software, training, consulting, staffing & 3D printing for architecture, engineering & construction.
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.
Sirius - An open-source clone of Siri from UMICH
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.