Muse Communications have put their MDK (Muse Development Kit) available.

“Muse-Lite is a unique next-generation PC tool that delivers a stunning new user interface experience. With Muse-Lite, the average computer user is now able to enjoy the Internet's richest media content while sharing the experience with other users simultaneously. Muse operates like a "super browser" allowing the user to operate in a 3D, multi-user environment while browsing multiple web pages, watching movies, listening to music, chatting, or viewing other computer applications. Muse-Lite is free for download today!”

The MDK comes with a 3ds max 'toolbox'.

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