Bukkit

Vault is a Economy/Permission plugin for hooking into the various Economy and Permission plugins.

PermissionsEx

A plugin to create holograms in Minecraft.

Plugin Manager For Bukkit

CS-CoreLib

Slimefun

Library for intercepting sent and receieved Minecraft packets.

Creates images and pixel-art using in-game blocks

Create user friendly menus to travel to worlds

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.

An API for all of Zombie_Striker's plugins

Disguise as a mob or other player

Expand the capabilities of Skript with skRayFall

CoreProtect

Massive Core

A Simple way of creating worlds for LobbyAPI

A Simple way of adding Bungee Servers for LobbyAPI

A bukkit plugin for adding neural networks into minecraft.

This is an Addition to LobbyAPI which allows the menu to show the world "world"

Votifier