Openlifegrid.com A Global Community 3D Metaverse built on Open Source Technology: "A Global Community 3D Metaverse built with opensource technology from the opensimulator project."
A Global Community 3D Metaverse built with open source technology from the open simulator project.
Similar to Second Life but not as developed. I run this on my system locally to do SL development without logging onto Second Life!! Gives me humongous number of prims to play with and as much space as I want. Only real drawback to me is the lack of a MAC version.