Bukkit

WorldGuard

Mine spawners with silk touch

Keep your inventory in a chest when you die !

Player and Mob Heads Full-featured plugin

Expand the capabilities of Skript with skRayFall

Remove lag and improve the performance of your server significantly with this tool!

If you've ever used the VeinMiner mod for minecraft Forge, it has now been recreated for Bukkit, CraftBukkit, and Spigot

Mine spawners with silk touch / Spawner Management

Herobrine

Add-On for Essentials!

Inexpensively protects your ores from cheaters.

Detect and fight the exploitation of various flaws/bugs in Minecraft!

Lop off Player and all Mob Heads with configurable drop rates + pvp-farming nerf, includes detailed commands and permissions

Protect and lock Chests, Furnaces, etc. with a easy to use GUI.

Simple Sit

Orebfuscator - Anti Xray

NoLagg

A plugin to warn your players when your server will restart!

StackableItems

Extra Hard Mode