Project Looking Glass by Sun Microsystems is open platform for creating an innovative 3D desktop environment for various Operating Systems.
It created lots of interest among developers when it was first demonstrated publicly by Jonathan Schwartz at Sun Networks 2003 in San Francisco, but it seems to have taken back seat for some time now.
Today when Operating systems (like vista ans OS X) seem to have gone 3D in order to look better people must look at Project Looking Glass which is an Open source software promising to make entire PC environment a 3D world.
Other links:
wikipedia:
http://en.wikipedia.org/wiki/Project_Looking_Glass
more screen shots:
http://www.sun.com/software/looking_glass/details.html
Open Source developers site:
https://lg3d-core.dev.java.net/
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