Second Life

second life is a free 3d virtual world where users can socialize, connect and create using free voice and text chat. to access this world you need to use a viewer such as second life viewer (see second life viewer).

Freemium Mac OS X Windows Linux Web

ActiveWorlds

Activeworlds hosts a Universe of over 500 3D virtual reality worlds. In these worlds you can choose from a vast array of avatars that fit your personality (or your perceived personality - that's half the fun!).

Free Mac OS X Windows Linux

Twinity

3D world and 3D chat community, you can create your own avatar, party with friends, dress-up, go shopping and interact via 3D chat.

Freemium Windows

VRChat

Join our growing community as you explore, play, and help craft the future of social VR. Create worlds and custom avatars. Welcome to VRChat.

Free Windows

Tower Unite

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

Commercial Windows Steam

vSide

vSide is an immersive, interconnected virtual city environment where you can hang out, listen to music, chat, dance, and make friends. vSide world With three...

Free Web

WhiteCore-Sim

The WhiteCore server is an OpenSim/Aurora-Sim derived project with heavy emphasis on supporting all users, increased technology focus, heavy emphasis on working with...

Free Mac OS X Windows Linux

SceneVR

Build multiuser 3d scenes using html-like tags and javascript. SceneVR scenes are viewed using a browser-powered viewer (powered by webGL). Chrome, firefox and IE are...

Free Mac OS X Windows Linux

FreeSO

FreeSO is a reimplementation of The Sims Online™’s game engine, using C# and Monogame.

Free Open Source Windows