Bukkit

A lightweight web administration that is easy to setup and fast to install

This plugin allows you to set your server MOTD in color through the config file.

A plugin for making GUI's that execute commands on click

A small plugin that adds tools for servers of all kinds!

iPixeli's Female Gender Option Plugin

A simple announcement plugin for your server!

HitBox

ModReq

DomsCommands

Best MOTD plugin, that will make ur server look SEXY!

A powerful PvP statistics plugin

It's for managing your plugins and install and update new ones.

Running Towny? Allow users to broadcast that they need a town to join

Broadcast Serverwide messages at a desired interval!

atsHelp

Shows a criminal record

A multi-channel chat-system. Can be used as an open-source, and more light-weight alternative to plugins like Herochat.

NoPortals

This plugin logs the ip addresses of players on your server, with various commands to provide information about them.

Credit Cards in Minecraft!