SceneVR!

Manyland is an open universe we invent and live together. In an infinite, shared world of abundance, we create new things by drawing them, build new places of any kind, hang out and chat, throw around stuff, shape our own appearances, collect what we like and provide what's needed, make music, party, go swim, enjoy, jump n' run, take care of the world, do sports, come up with puzzles, explore... and have a lot of fun together in ways none of us can predict.

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.

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!). You can then move about, play online games, shop and make friends with people from all over the planet. You can even stake claim to a piece of land and build your own virtual home, mansion, estate or castle! If you like to travel, there is plenty to explore.

A 3D internet chatroom application for chatting with friends and meeting new people

Lumiya is a Second Life and OpenSim client with 3D world view. With Lumiya, you can send and receive instant messages, teleport to your favorite Second Life locations, participate in local chat, interact with objects, manage your inventory, see and navigate the virtual world around you in 3D.

Join the worlds largest virtual hangout where you can meet and make friends. Design your own rooms, collect cool furniture, throw parties and so much more! Create your FREE Habbo today!

Furcadia is the magical world where the animals have learned to speak and walk upon two legs. Create your own customizable avatar and start exploring the friendly online game (MMOG) with rich player-driven content. Our established online community, grown over years, has become a second home to tens of thousands of players. We invite you to an interactive experience unlike any other.

Lightweight client for connecting to Second Life and OpenSim based virtual worlds

Chit Chat City – Virtual World Game – Free Online Avatar Chat World with housing and paintable 3D avatars

Open Cobalt Alpha is the first step in a long term project to make available to all people a free and open source platform for constructing, accessing, and sharing virtual workspaces for research and education. This 3D multimedia wiki technology makes it easy to create deeply collaborative and hyperlinked multi-user virtual workspaces, virtual exhibit spaces, and game-based learning and training environments that run on all major software operating systems. By using a peer-based messaging protocol to reduce reliance on server infrastructures for support of basic in world interactions across many participants, Open Cobalt makes it possible for people hyperlink their virtual worlds via 3D portals to form a large distributed network of interconnected collaboration spaces. It also makes it possible for schools and other organizations to freely set up their own networks of public and private 3D virtual workspaces that feature integrated web browsing, voice chat, text chat, and access to remote desktop applications and services. »

Smeet is a virtual 3D World, where you can create your Avatar and your own Room. Start now and meet new friends, flirt, organize your party, share pictures and videos!

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

Janus VR is an immersive and collaborative internet browser. Janus VR re-imagines webpages as multi-dimensional spaces, linked by portals.