Bukkit

Add, Replace, and Remove creature drops

a powerful performance optimization plugin designed to manage and reduce your Minecraft server's RAM

VoxelModPackPlugin

Prevent users from tab completing and revealing hidden commands

A simple but feature-full nicknames plugin that allows you to set other players' nick names

Burn your ores with fire! Real fire!

OPControl [Inactive]

Custom Chat Monitoring and Spam Prevention

Several tweaks and configuration options to enhance survival multiplayer

Makes trade offers of villagers use fair prices, geared toward removing exploitability while leaving trading usable.

PlayerBar

ResProtect - Added Animal & Villager Protection to Residence

ObsidianBreaker

Put commands for certain worlds.

Only a certain percentage of the players on the server need to be sleeping to change to day

CPFix

Build proximity-based redstone triggers without buttons, levers, or pressure plates.

SignInColors

Set your server spawn as a superior

Game time synchronization with real time.