Bukkit

simple easy fun

The server fixes for Builder's Client.

SimpleGS

A simple plugin which adds more commands to enhance fun.

Ban all swords but one!

Allows users to see in the dark.

Prank

Teleport to your friends at the cost of 1 experience level

made in Japanese

[ADMN]GameModeChanger

Item Hoover lets players suck up nearby dropped items to their inventory.

A simple /help plugin that allows versatile, easily modified, custom help pages.

HKSupport

FreezeAdvanced

BukkitPing is a plugin that gives players the ability to check their own or somebody else's connection to the server.

Fan-made Life Steal SMP plugin but simplified

A simple /fly Plugin

1vs1 with a bow that "One Shot" and a recoil stick X

Handy tool for servers

Block Heal