Bukkit

Chat filter plugin allowing custom word group actions and messages.

BetterJoin

A simple anti-swear plugin my pt1448.

This is a great fun plugin for you and your friends.

A simple plugin that adds customisable tags to your game.

Library to easily create modern chat messages with events

Simply create player join and leave messages.

Fool other players into thinking they are op.

Cleans the chat

Planet-Fx Varo

ClearChat

Stop players from saying budder

ZGPermissions

Fake a login/logout!

PointsPrefix was a private project which shows amount of each player points,on your chat box as a prefix

Voucher System that creates unique codes and executes commands.

http://dev.bukkit.org/bukkit-plugins/thclearchat/files/1-thclear-chat-v1-0/

You can Warn Players with this plugin!

A updated version of aurel2108's Freeze plugin

Basically, it does not allow players without op to execute any cmd to view the server plugins.