Bukkit

Tool for culling zombies to reduce lag, while getting "pet" zombies with names

Simply heal yourself with one command.

BitChat is a simple and lightweight chat logging utility with enormous potential.

ExtraCommands

BookSaver

Broadcast random or listed MOTDs in your servers chat!

ModPlus: The simplest solution to quietly teleport to a player.

Essential things

StopDrops

A simple server-wide protection plugin

TouchNotices

Flight + PING>PONG

AutoPromote

Personal Space!

Automatically cook mob drops!

Ever had an annoying player you just couldn't get rid of? Now, you can get rid of them in the cruelest ways possible.

Use /broadcast to broadcast a message or let the auto-broadcaster do the work for you!

This plugin disables IPs and URLs

Lets you use team names in place of usernames in commands

WarpsAPI