Bukkit

Do drugs in Minecraft! Add some wild potion effects and particles to any item in game...

Lightweight Protection for Chests, Furnaces, Dispensers, and more

Report rule breakers

Summons little gremlins to organize your chests when you're not looking.

Teleport players to spawn/hub/lobby upon join!

Per user, per world highly configurable compass mechanics.

AimbotPro

WebPortal

A plugin that gathers a list of permission nodes for each plugin installed on the server and outputs the nodes to 2 files.

The Ultimative Administrationplugin to update and manage Bukkit and its Plugins

A simple and easy to configure plugin that lets you announce to the server when a new player joins for the very first time.

BanItem

CrazyOnline

SaveIt

Manage flying and related commands on a per world basis!

Increase or decrease speed, sync worlds from different servers, display actual time and date ...

SeePlayerInventory

Custom jail plugin based off of imjake9's SimpleJail

Provides automated plots with protection (MultiWorld support)

Limit Pointless Mob Spawns + Reduce Lag!