VAST is a light-weight network library to support scalable peer-to-peer (P2P) virtual environment / virtual world applications such as Massively Multiplayer Online Games (MMOGs). It is based on the research of Voronoi-based Overlay Network (VON) published
Solipsis is a pure peer-to-peer system for a massively shared virtual world. There are no central servers at all: it only relies on end-users' machines. Solipsis is a public virtual territory. The world is initially empty and only users will fill it by