Bukkit

Monitors your staff's online time

Filling mine

Ever wanted to change your chat colors GUI based? Here you go!

A plugin that allows developers to completely hide a player's nametags.

Allows you to automatically execute commands if a player enters/leaves a WorldGuard region.

Cloud Trade is a plugin that allows players to securely trade items.

PvPEvent

Reports

Entei's Commands is a plugin that allows you to manipulate/manage any command, be it rcon, cmd block, console, or player.

ChatTools+

A lightweight and intuitive survival plugin that offers alternatives for many others

Open a player's inventory with just one command!

The Hidden Lorax will automatically plant saplings left on the ground.

IonCannon

goatcraftplugin

ItemLib makes it easy for developers to modify item attributes.

Meteo

Ultimate PlayerStacker

Have you ever wanted the the chickens on your server to go boom when a player get's near them? Of course you have!

A TNT and other block blocking plugin.