WhiteCore-Sim!

OpenSimulator is an open source multi-platform, multi-user 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. It also has an optional facility (the Hypergrid) to allow users to visit other OpenSimulator installations across the web from their 'home' OpenSimulator installation. In this way, it is the basis of a nascent distributed Metaverse.

Finally, a community-based virtual world filled with actual games and entertainment made by people who love creating games.

In Twinity's free 3D world and 3D chat community, you can create your own avatar, party with friends, dress-up, go shopping and interact via 3D chat and animations. Get creative and design your virtual apartment in an authentic real virtual city or create your own island to host parties, flirt and lead an extraordinary life! Join now and discover the possibilities of Twinity's virtual universe.