Bukkit

Highly Customizable Hardcore Factions

extra storage in a backpack on your chest!

Allows server operators to define multiple respawn points.

NoCompassDrop or NCD is a plugin that will deny players from dropping or moving a compass around in there inventory.

Causes player heads to drop when killed by another player

Craft powerful weapons!

The levelling up plugin; adding skills to Minecraft

More Food Plugin

PlayerPlus

AdvancedBombs allows you to create custom bombs, mines, timebombs and triggerbombs

Can you survive through the zombies?

Add a little Easter fun to your server

Archery levels and custom arrows.

Bugsy's Party System

HealthBar

RPGDrops by ceoepts

Make it hard to convey your wares

Garry's Mod Murder put into Minecraft!

Gives the player the ability to heal another living creature with a bandage

Bukkit plugin that adds virtual cell phones.