eDrawings
eDrawings is a free viewing and publishing application for sharing and archiving 2D and 3D product design data.
Collaborate more effectively with everyone involved in product development by using eDrawings™ software, the first email-enabled communication tool that dramatically eases sharing of product design information. Fast, reliable, and convenient, eDrawings files supply accurate representations of 3D models and 2D drawings created with the most widely used CAD systems on the market. eDrawings offers unique capabilities like point-and-click animations that make it easy for anyone with a PC to interpret and understand 2D and 3D design data.
You can get further information or download an eDrawings evaluation copy here.