Bukkit

You can change the Message for the "Unknown Command" and you needn't Protocollib!

Player Quit Event V.2

your best announcer tool ever!

Bukkit GUI

OnyxAdmin

Shut them up! [1185]

[CHAT/ADMN] MuteGroup v0.2 - Mute those pesky guests. [1060]

Mimics the well-known IRC services like NickServ, MemoServ, ...

Voidkill

Wampom is an all-in-one, simple server solution, for all the essential, and fun commands

Display Periodic Message In Chat

A Word-Changing plugin

Stops people from mass-botting on your server using a tool known as PWN4G3

Essentials Red

SimpleJoinMessage

Modbot

A simple bukkit plugin in develoment stage

MC-Admin Chat Auto Updater

Have you always wanted to have a feedback for all users on your server that with it can give ideas? Feedback+ is your solution!

Players of the server will have a HUD displayed in their chat