Bukkit

Warn players when there is no-one around

Want to permanently stop users advertising?

Plugin, that allows you to control all chat messages from the server.

iTranslate is basically google translate, INSIDE MINECRAFT!

Do you have players asking annoying questions all the time, Well if you do then get this plugin.

Disables /plugins for players who lack a permission node.

Simple remote IRC administration for your Server!

Prevent spam bot attacks easily.

Troll

KTP_KillThePatrick

A RP-Safe chat system

(discontinued) lightweight chat enhancements

NoServerMessages

Catch those Griefers red handed! Embarrass them as well, giving yourself and your players a good time!

CraftAdmin is a simple and fast Control Panel for Minecraft servers! Easily access the most important admin features at any time

Server Plugin For Prison Servers

Get Me Broadcasted!

FAQ Plugin to make the server admins life easier

This is a really simple plugin to make colored holograms!

Full featured permission grouping with highly customizable chat formats