Bukkit

SafeGuest disables the most abilities of guests like building or something.

Very Simple Light-Weight Anti-Grief plugin!

AntiTNT

UtilityPlugin

BlockTNT

NoAccountHack

A free anti spam plugin for a spam-less server!

A new approach to creative mode grief protection!

BanFun?

GriefBlocker

CatchCreative Does what its name does !

Defend your constructions against griefers by reinforcing them.

Op Verify

MagicFurnace

An embedded block logging system. It supports rollback and redo.

Allows you to buy and sell claims made with the Grief Protection plugin.

ECProtection - An antigrief measurement.

Simple Ticket system to handle reports

AntiMobSpawn gives you ultimate control over the creatures that spawn in your Minecraft worlds

Allows multile WE limits for PEX