Bukkit

You need a good Youtube plugin ? Get this !

Add greeting and change messages when joining / leaving

Basics

Get notified when someone says your name in chat!

This is a Minecraft plugin that allows you to make your own custom Reminders that show at whatever interval you want!

Allow your players to gamble away their riches! (Or get richer)

TabListPlus

A Nice Easy To Use Chat System

It shows player's statistics.

admins can talk with out players seeing

This plugin shortens the /gamemode 0/1 command!

Test whether you are in sync with the server or whether there is latency between you and the server!

MSGName

MentionPlus

Twitter for Minecraft!?!

Smart Broadcaster

Remove all text from chat by typing "/cc"

vChat

Allows restricting of certain words in chat and the ability to kick or warn the player.

Mess@ge, a new way for chatting