Bukkit

War Games

This plugin allows you to change the biome of a certain block type within a region.

Items from blocks are multiplied.

SetFlyspeed a simple plugin that makes you fly VERY fast!

Restores the ability to get wool by punching sheep.

A random spawning meteor!

Every block mined has a 10% chance of exploding!

AholaTrade

This plugin is for double-jumping around your world!

MagicWeapons

The server fixes for Builder's Client.

This plugin allows a user to move blocks around using the "TelekinesisWand".

Let your players interact with each other through hugs/kisses and much more

MeDoFrame

with GUI

Adds a bunch of new tools and fun stuff to Minecraft

Displays biome specific textures of blocks (requires CTM via resource pack, via optifine) via navigable GUI

Team PVP oriented plugin with ZERO commands!

It adds a gui to item frames so that you don't have to break them every time you want to replace a block

DeathBind - Bind your favourite items, avoid losing them on death!