Bukkit

EasyJoinMessage

Staff Attention

Let your users shout to the server!

This plugin clears your chat for players only and staff included. You can make custom messages as well.

Minecraft Plugin - ZBlock

A simple light-weight plugin that stores location data.

A basic but fun emotes plugin.

ExtendedCustomHelp

Greentext Chat Add-on

Social graphs, chat logging, and messages made simple!

This Is The LinkDisplay Plugin I Made, It Shows Messages

This plugin allows a player to send his coordinates to another player more easily.

Provides a means of finding mobs near to you, and returns the name, health, exact xyz location, and distance from you.

A help GUI using Spout

Translates all chat into british talk

A plugin where players can customize their own prefix as they want. In addition, the Join and Quit messages as well as a JoinTitle can be changed.

MessageManager

Persistent player nicknames with color support

Plugin for private messages

VEmotion is a plugin to show emotion through chat commands.