Fan-made "Star Wars: X-Wing Miniatures Game" simulator

Citizens - the premier plugin and API for creating server-side NPCs in Minecraft.

Lightweight, Simple, Chat Channels

Legacy custom launcher for installing and updating Spoutcraft and Minecraft.

A simple permissions and groups plugin for Bukkit's permissions system.

Open source, multithreaded, voxel game engine and platform, written in Java.

[unmaintained] Minimap mod for minecraft

Residence Bukkit Plugin

Attempting to get 6.0 out.