Bukkit

A plugin that lets you put any item in the suspicious sand or gravel

Prevent Sapplings From Growing

TearDrop - Turns dropped items into blocks and more

Swap Positions with a player

Create compact bottles that hold your experience levels!

HandRefiller is a plugin which refills a players held when it's leaving from his hand and the user has an appropriate item in his inventory to refill with.

AGTV

Automatically repairs your tools and armor, rendering them indestructable

This is a plugin to block commands, due to glitches, or other.

RedstoneMobSpawner allows controlling mobspawners via redstone

Players leave 'footprints' behind them as they walk

ZAP

Automatically updated names for compasses with variables (location, direction, health and more)

Set tools to do commands when you click!

DarkBrotherhood 2

A server plugin that add some features for simplify life of players.

Ultimate Hunger

Extensive PVP Levelling

Upgrade any enchantment with just one command!

Make web smoke actually move and billow!