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Attention: There is a current proposal to drop Visual Studio 2005 support in OpenSim by end of May. Use the mailing lists if you have questions or suggestions regarding this.

What is OpenSimulator?

Image of the Moment:
Opensimulator Community Conference 2013

Windownload.png Binaries Zip (
Linuxdownload.png Binaries Tarball (
Windownload.png Source Zip (
Linuxdownload.png Source Tarball (
Download.png Diva distro ( Binary, all OSs

sha1 hashes

Other downloads may be found at either the Download page, or the OpenSim Release Repository

OpenSimulator is a 3D Application Server. It can be used to create a virtual environment (or world) which can be accessed through a variety of clients, on multiple protocols. OpenSimulator allows you to develop your environment using the technologies you feel work best - we've designed the software to be easily extendable through loadable modules to build completely custom configurations. OpenSimulator is released under a BSD License, making it both open source, and commercially friendly to embed in products.

Out of the box, OpenSimulator can be used to simulate a virtual environment similar to Second Life™ (including client compatibility). Other environments, protocols and features are supported via add on modules. For a list of available modules check out our forge site.

Although OpenSimulator is still considered alpha software, many people are doing exciting things with it.


Even though OpenSimulator is relatively young software it already has many useful features

  • Supports creating multiple 'worlds' in a single application instance.
  • Supports multiple clients and protocols - access the same world at the same time via multiple protocols.
  • Extensive ability to customize your avatar, both with custom clothing, skins, and attached objects.
  • Realtime Physics Simulation, with multiple engine options including ODE, PhysX, Bullet and more.
  • The ability to create content real time in the environment using in world building tools. What you see is what you get.
  • In world application development using a number of different languages, including LSL/OSSL, C#, JScript and VB.NET

Using OpenSimulator

The fastest way to get started using OpenSimulator is to create an account on OSGrid, then download the Hippo Viewer or Linden Lab's Second Life viewer (amongst others) to connect to OSGrid. This process should take no longer than 10 minutes, and will give you a flavor for what OpenSimulator is like.

You can also easily connect to any one of the many public grids on the internet.

Or you could run a simple standalone OpenSim on your Windows desktop to create and preview content. Here is an tutorial showing how to get opensimulator in stand-alone mode..

Running your own OpenSimulator

If you are interested in running your own OpenSimulator server, to host your own 3D environments you'll want to check out the following links:

Participating in the OpenSimulator Community

OpenSimulator is an open source project, and is powered by the community members that devote time and energy to the effort. There are many ways to participate and contribute to the community:

Wiki Translations:

Languages: Spanish, German, Francais, Italian, Português, Japanese

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