Bukkit

Allows Ops to record players movements and play them over again

Backup your server

SpoutFlight

Simply Blocks All CAPS Messages

VillageProtection

Checks if someone broke a diamond block!

Multiworld-Manager/-Teleporter

Shows ratio stone:ore per user.

Automated resource-world resets for CraftBukkit.

Bukkit plugin/library that allows extensible javascript scripts to be run

Chaintrain

Throw a potion to automatically create a WorldGuard region

Easy using interface, like chestcommand.

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

A powerful PvP statistics plugin

BlockControl

GoGoBanYourself

UltimateTranslator - Advanced translation system.

LAC is a free anticheat.

[Clearchat] clear the chat with just /c!