The aim of this project is to develop an extensible framework for building "virtual worlds", and allowing large numbers of people to explore them. Examples would be a MUD, or even a virtualization of your own home.
NekoMUD is a Multi-User Dungeon server written in Java using the Spring framework. Individual MUD servers may be made part of a larger MUD network. Server code is licensed under the GNU Affero GPL Version 3+.