Motm Bonsai1
Virtual LEGO building for Macs – “Bricksmith allows you to create virtual instructions for your Lego creations on your Mac. The magic is based on the LDraw library, a collection of 3D models of Lego building blocks created by enthusiasts from around the world. With Bricksmith, you never have to worry about running out of parts!” [via] – Link.

Related:
LDraw – Link.