Bukkit

NewPlayerProtection

This is a plugin that could block most of the hackers from entering the server

Easy anti-griefing options and a block blacklist w/ permissions

Your NPCs are now immortal, if you don't have requied permissions

Censorship IP

Provides a toggle to turn on and off creeper block damage

Plugin as cut /? /plugin /pl

A lightweight plugin to keep track of player misbehavior in the form of "strikes."

Placed TNT Warning

Prevent unauthorized players from picking up or placing lava (bucket or blocks)

Easy to use world protection plugin.

A 1.16 - 1.17 anticheat

Close Down - Shut of your server from players for a while

Allows you to quickly GeoLocate your players.

Beat them up, and jail them!

This allows you to view server details, and other player info

Make UnWanted player spectators so they can't destroy anything.

An anti-griefing plugin.

Someone breaking player's house? But you don't know who? Here's the awnser!

Have you ever wanted a maintenance mode for your server, then this plugin helps you out.