Bukkit

Add custom NBT tags or modify tags of Items/Entities/Tiles without NMS!

Advanced /vanish plugin which makes other players think that you're not on the server

Fully customize any mobs (and create custom mobs) with a powerful scripting skill system, attributes, equipment, special AI, and much more, along with custom spawners and spawning rules. The ultimate plugin for making RPG servers and minigames.

Remove lag on your Bukkit server with this easy to use plugin

CoreProtect

The best chest&sign shop system for Bukkit

The multiworld plugin made by ferrybig

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

SetSpawn

This is a easy to use GUI shop plugin.

PermissionsEx

Nether Portals module for Multiverse-Core

Library for intercepting sent and receieved Minecraft packets.

Get custom items on join.

Replicate first-person shooters with advanced gun-mechanics and a vast number of exciting and fully customisable features.

Sit on stairs. Also supports sitting on custom blocks.

A portal plugin designed by sekwah41 to be simple to use but have all the powerful features you would ever need!

PowerRanks

Enchant any item with whatever you want, add lore to items, rename items too! UberEnchant has it all!

The one and only Troll Plugin you will ever need!