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Note 1: If you are reading this on any site but, you might not be actually downloading software. Please check your browser URL before proceeding any further.

Note 2: Depending on what you want to do with OpenSimulator, setting it up and keeping it running will require a fair amount of technical knowledge. After downloading OpenSim, please consult the several instruction manuals on this Wiki and elsewhere. Please be aware that the learning curve for operating OpenSimulator is steep.

Note 3: Many Linux distros (including Ubuntu) ship with only the "mono-runtime" package installed, however you need to install "mono-complete" for some OpenSimulator features such as LSL script commands.

Note 4: OpenSimulator is made available under the BSD License. Downloaders of the code also receive an additional IP Rights Grant for any intellectual property licensed to OpenSimulator under the terms of the Contribution Agreements.

Binary Packages

Current release

Binary packages of the latest OpenSimulator release are provided in .zip or .tar.gz form. The two packages are theoretically identical, though the .tar.gz was built using mono while the .zip was built using .NET.

Once you've unzipped/untarred these you'll be able to run OpenSimulator 'out of the box' in standalone mode - no code compilation or other installation required.

The current release is (released on January 7, 2020) and can be downloaded as

After unpacking please read the Release Notes. Further instructions on running OpenSimulator may be found in README.txt after you untar/unzip the archives and within this wiki.

Release (released on August 15, 2017) is also available and can be downloaded as

After unpacking please read the Release Notes.

Release (released on March 4, 2015) is also available and can be downloaded as

After unpacking please read the Release Notes.

Other Distributions

OpenSimulator is a BSD licensed codebase, so other projects are welcome to repackage OpenSimulator and add their own modules or configuration. Current known public distributions are

  • Diva Distribution, a Preconfigured hypergrided standalone, binary distribution. Easy to setup and to keep up to date. Windows and Linux/Unix. Download the file, unzip it, read README.txt and take it from there.
  • Sim on a stick (SOAS). A portable, standalone and self-contained deployment of OpenSimulator. Can be run from a USB stick on most Windows PCs.

Source code

Current release

The two packages are identical apart from their compression formats.

Also available are

Source code repository

You can also download code directly from the OpenSimulator source code repository. However, we only suggest doing this if you've very familiar with OpenSimulator. Master development code at any point may be broken or may contain database changes that later need to be reversed.

Previous releases

You can find previous releases of OpenSimulator at Very old releases (pre OpenSimulator 0.6.8) only have source code packages.

Previous Release Notes

Developers and Testers

If you're a developer or a tester and you want to download possibly broken development code then please go here

Related Software

  • Related Software Section - Here you can find details on OpenSimulator compatible viewers, external components (e.g. web sign-up systems) and add-on region modules.

Pages by Category: User-pages, Developer-pages, Scripts

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