OpenSimulator is a 3D Application Server. It can be used to create a 3D Virtual World (ala Second Life(tm)), and includes facilities for creating custom avatars, chatting with others in the environment, building 3D content in world, and creating complex 3D applications in world. OpenSimulator can also be extended via loadable modules or web service interfaces to build more custom 3D Applications. OpenSimulator is released under a BSD License, making it both open source, and commercially friendly to embed in products.
Search Grid_List or lets have a look at http://openlifegrid.com/ as an example ;)
PFFFFFFF! Have no time for this play. The windo$ client gives a Microschrot error and on Mac also no phun ;(
