OpenSimulator is an open-source server platform for hosting virtual worlds and the Metaverse. It is largely compatible with the virtual world Second Life but compatibility is not a design goal.
Cost / License
- Free
- Open Source
Platforms
- Windows
- Linux

Comments about OpenSimulator as an Alternative to Second Life
Open Simulator is just a Server API, But Second Life is a complete Game.

Most users think OpenSimulator is a great Second Life alternative.
OpenSimulator is the most popular Windows & Linux alternative to Second Life.
OpenSimulator is the most popular Open Source & free alternative to Second Life.
- OpenSimulator is Free and Open Source






























Basically, OpenSimulator is the free, open-source, reverse-engineered version of the Second Life® engine, which you access with the same viewer. As a consequence, you can see exactly the same kind of content — but running from your own server at home, if you wish, for zero hosting costs.