Bukkit

Addeds the Ability to play music from a custom resourcepack on a server, without overriding existing music

Massive Core

Expand the capabilities of Skript with skRayFall

PowerRanks

CoreProtect

Exotic Garden

KitAdder

An mcMMO themed plugin for horse role-playing.

An addon to the popular addon Skript that exposes the Bukkit API to general server owners

Another auction house plugin.

iConomy - Reloaded!

A quality gun plugin similar to CrackShot.

ServerSigns - Bind player and server commands to signs [1337]

Disguise as a mob or other player

Votifier

Bssentials GroupManager

Enchant your items!

ChairsReloaded

Unique and challenging custom achievements or quest-like objectives on your server! Books, fancy GUI, rankings, rewards, effects and more!

Commandless, Multi World, Player Owned Shops (Vault)