www.ldraw.org

None of this would be possible without the LDraw community...

www.technic-dialog.de

All about Lego Technic and much more.....

 www.crowkillers.com

One of a few ingenious designers what Lego Technic terms.

Holly-Wood.it focuses on virtual LEGO building with the LDraw System Of Tools by providing tutorials, utilities and software add-ons.