Bukkit

An all around administration system that contains bans, mutes, IP tracking, watchlists, player help commands, and much more.

A lightweight and highly functional guilds plugin.

A simple, fully-featured, and light-weight homes plugin. Includes

Disables other players ability to damage your pet wolf. Leave my wolf alone!

A plugin that allows you to throw primed TNT grenades when pressing "Q" with TNT in your hand.