Until recently Second Life was the only choice for those wishing to create and interact in 3d environments but it has proved too expensive and limiting for many organisations, users and educators.
The open source project, "Opensimulator" has changed the 3d landscape irrevocably with its flexibility of use participants from the basic user to the most experienced programmer can have an input into the 3d metaverse.
This is cutting edge technology as good as if not better than any commercial solution available.
For more information visit opensimulator.org.
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