Bukkit

WordBlocker is a plugin which certain words and commands from chat.

Customizable Chest SortingPlugin

SlimeBall - Glues everything together

Minequery

A small admin chat modification for bukkit.

Can't ever remember those color codes for chat? This plugin is for you!

Displays biome specific textures of blocks (requires CTM via resource pack, via optifine) via navigable GUI

Simple, easy to use announcement plugin for Minecraft

Makes IP banning easier. PermissionsEx only.

Commands that give you the who, what, where and why of players on your server!

Ever wanted users to just type a command and get their answer? Well now you can!

A voting plugin

BetterDeathMessages bring some neat and new death messages to your server!

Server Broadcaster allows server owners to broadcast important messages or reminders across the server for all players to see.

NoticiasES-Reloaded

You have trouble organized your Event? / FR: Vous avez du mal a organisé vos Event ?

Dynmap addon for MyChunk

Lookup players' name history without the bloat.

SpecInfo

Reporting made easy