Bukkit

[UNMAINTAINED] Create modern looking holograms.

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

CS-CoreLib

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.

Expand the capabilities of Skript with skRayFall

FastAsyncWorldEdit

An API for all of Zombie_Striker's plugins

Now with custom enchant table/anvil mechanics! Manipulate item names, lore, enchantments, and more!

CoreProtect

MOVED TO: https://github.com/TheBusyBiscuit/Slimefun4#slimefun-4

Library for intercepting sent and receieved Minecraft packets.

A simple homes plugin with the ability to create, delete, and teleport to many different homes.

A visual and dynamic skill tree API for the easy setup of unique class systems

Create user friendly menus to travel to worlds

Plugin Manager For Bukkit

Grants developers access to a library of various effects.

Creates images and pixel-art using in-game blocks

Simulates fake players on a server.

A simple plugin to handle permissions, groups, prefixes and suffixes with GUI and Web Interface

Massive Core