Bukkit

Bukkit plugin to detect and/or remove items from a player's inventory

ist ein plugin :D

Yet another troll plugin.

EssentialVanilla

Allows users to transfer control of commands and bypass existing permissions.

RoyalIRC

This plugin allows you to set a Custom Scoreboard in your server

Broadcast a message in the chat

WhoBannedMe interfaces with the FishBans API to let you know how many global bans a user has.

A simple ranking plugin for servers with multiple Staff levels

Placed TNT Warning

Turn hoppers into machines that compress items into storage blocks.

Zimright

A plugin to temporarily disable chat for all non-admin players

Stop creative players dropping items, putting items in chests, and their items dropping on death.

ICQ Sender

A pretty simple and decent Help Request system for bukkit servers.

SlimeBall - Glues everything together

Have your own staff chat for a spigot server

Drop Party plugin which uses a DP area