Simple meta-server for locating other multiplayer servers
...One particular strength of the player-hosted games setup is that it places the burden of Internet traffic on the player base and not a central server. OverServer tries not to violate this strength by keeping the query and response length very low to cut down on overhead from running the metaserver.
I designed OverServer with a few lessons in mind from Valve and Won's metaserver setup for Half-life. It is at least somewhat resistant to attack through a challenge-response system for incoming requests. ...
This project is a pure Java implementation of an MMORPG / mud, server and client. It is a fully persistent world, backed by a MySQL datastore. Features NPC AI, shard-level scalability, and persistent items, and a particle attack system.
This is a strategy planner aimed mainly at the hardcore first person shooter fans. Similar to a white board application it allows many users to connect to a central server and the users are able to draw and place actions on the board for everyone to see
A threaded java MUD server with persistence in MySQL using sprocs. Uses command pattern and reflection for command parsing. NIO for networking. Excellent code comments. Map command uses visited rooms. Plans for configurable attack profiles per enemy.