Bukkit

A plugin to use groups, diffrent syntaxsses, priavte chatas, group chats and so on...

a plugin that adds in essential commands

FoundOres Revisited

Give your players a handy rule book that they can read at any time.

An easier way to change groups/ranks. [PermissionsEx]

Use one sign to deposit or withdraw from your bank.

Ample Chat Bot is a chat robot that responses to key phrases in chat/

Rentable Advertising Signs

Define your own join and quit messages with colors, groups and chatnames. (Prefix and Suffix, too!)

SuperTab

Allows you to create a tutorial for your players to follow

Show Residence zones and subzones on Dynmap, with dynamic updates

Leadership based parties with damage protection.

PlayerBar

Prefixed Playerlist takes prefixes from its config or PermissionsEx and displays them in the scoreboard (invoked by TAB ingame).

Allows you to block commands for players/playergroups and spy what they try to write

Abacus

Plot Manager

Minetopia ATM plugin

Simple broadcasting on your server.