Modular Minecraft server plugin - commands, events, ...
This project gives you freedom to get a fully-customized plugin for CraftBukkit Minecraft servers. You choose what to include and build it up.
No more command collisions, no unnecessary memory and processor overhead on your server.
A Minecraft server written in C# with a large focus on concurrency (multi-threaded) and plugin support. Custom code provides new functionality to existing Minecraft features - this includes new biomes, realms, and populators. Has a robust and customizable terrain generator and easy plugin capabilities for new features.
An alternative/custom Minecraft server, written in Java, compatible with the original protocol. OpenCraft is built upon Apache MINA, SLF4J, Jython and XStream. The aim is to have features not in the official server distribution, like antigrief/scripting.