LeoCAD - LeoCAD is a CAD program for creating virtual LEGO models.
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
LDraw - LDraw is an open standard for LEGO CAD programs that allow the user to create virtual LEGO models...
CADMAPPER - Instant CAD files for any location on earth
LDCad - LDCad is a multiplatform ...
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.