Bukkit

Give player names in game a rainbow colour by aciid

eAdminsTools

RealiseCity

IkasFirstPlugin!

Vanilla chat that's compatible with administrative vanish/phantom plugins

Allows you to simulate animals noises!

LogMsg

PermissionsRanks

RoomyChat is a plugin for Minecraft that allows you to customize how people talk to each other on your server.

Enhance your bukkit server with Character Cards, Emotes, and other features.

BkrChatReload

Connects dynmap's webchat with CraftIRC3

Express your true feelings towards others, with commands!

Simple event manager for your server.

Program and host your own bot on a minecraft server, with no knowledge!

Alternative Factions and Land-Grabbing Solution

A GUI to change GM and teleport through worlds.

Shows link to texture pack

TheBroadcast

Prevent Users From Swearing.