Bukkit

Mount Horse!

You can set, change, ajust the time based on your Server's current time!

Adds configurable healthbars to players

Paint in your world and a flame thrower for an added weapon!

With /head playername, the player receives the head of the specified player.

Spawns a firework above the player

Paint the terrain

Disables fall damage

iGuns brings guns to minecraft. =]

Let a pandemic rule on your server and try to keep it under control

Create signs that launch fireworks

Powder Chests

HastePotions, cheaper than a Beacon!

Sugar is the new drug!

Arm Up

Chain commands allows you to make any command an area of effect command!

chatterbox lets you use a Minecraft servers chat on a website.

An ultimate configurable drugs plugin

Possess a player and have them move, die, do commands, and other fun stuff

Boats can now hover, fly, mine or be submarines!