DeleD CE - DeleD is a 3D modeler and level-editor combined into one.
DWGFREE - DWGFREE is an online platform that comes with a comprehensive collection of CAD blocks that can be downloaded without the need for registration.
3DTin - 3DTin is a browser based 3D modelling tool.
CADMAPPER - Instant CAD files for any location on earth
Pmx Editor - PMX Editor is for editing 3D model data to be used in MikuMiku Dance.
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.