Bukkit

Backup and restore your server with ease. [aupports FTP]

PlotSquared

Hide from your players! Invisibility for the distinguished gentleman.

LimitDrops

Hide and Custom your Plugins and other Commands!

Inexpensively protects your ores from cheaters.

FastAsyncWorldEdit

Orebfuscator - Anti Xray

Continuation of the popular AntiCheat anti-cheating plugin.

bPermissions

Nerf those creepers

Permission-based world modification control

Player property protection using special block placement.

Residence

a plugin that adds in essential commands

An advanced SQL based punishment management system for your server

Ban too harsh? Mute too weak? Kicking not enough? Jail them!

OnlyProxyJoin

Login-System

Protect your item frames, paintings, armor stands and leash knots! Very simple to use.