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Release Notes

See Dev (git master)

Also Release Notes


Welcome to OpenSimulator, an open-source multi-user 3D virtual environment and metaverse server platform.

OpenSimulator is a highly complex system. Various usage scenarios (standalone, grid, hypergrid, etc.) in combination with different dependencies (e.g. different versions of mono on Linux/Mac) can sometimes produce unexpected or unstable behaviour.

If you are upgrading from a previous version of OpenSimulator, then we strongly recommend that you start off with the default configuration files and port over any changes you made to your older version of OpenSimulator.

You can download this release of OpenSimulator from Download

This version includes several corrections and improvements to release

Known issues

  • Users may need to reduce the viewer bandwidth, if they notice invisible prims or parts of terrain


OpenSimulator requires:

  • At least .NET Framework 4.6 when running under Windows.
  • At least Mono 5.x when running under Mono (Linux or Mac).

Changes and Fixes

  • new script engine: Yengine (XEngine is still the default)
  • support for viewer side objects cache
  • support mesh objects animations
  • early Bakes on Mesh (BoM) support
  • change to section name in config-include/osslEnable.ini [XEngine] -> [OSSL]


Many, many thanks to all the developers, testers and community members who contributed to this release and who help out with OpenSimulator generally. Your hard work makes this all possible.

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