Bukkit

All in one admin panel for your server.

Limit your players at a number of uses per command

Gives you an easy way to link your link your website

Generate worlds

Mined blocks go straight to your inventory!

Make sure everyone knows if they use a word that GNU thinks they should avoid.

MSGCraft

RedstoneTorch

The InternalPluginManager is a facade for Minecraft server mods to provide cross-platform plugin comptaibility.

Troll your friends with Admin Powertools

BlockedCommands

ClearChat

Multiv

nutzChat

AntiWeather is a simple weather toggling plugin that restricts downfall in one world while allowing it in another.

Rank up your players after a certain amount of time!

Really flexible ranker plugin: time, exp, required ranks, money(coming), permission(coming)

Allows the restriction of crafting certain items

ExpHandle

Create Special Note Blocks That Play Mob Sounds And Other Sound Effects!