WowAce

LibFuBarPlugin-3.0

A library that tells wether a item is a quest item or not (equipped or in bags)

Allows movement and scaling of class-specific resource displays

Library to provide non-explicit cooldown tracking and callbacks.

Armored man and paper doll durability modifier

MonkeyPirate

This is an add-on to block incoming guild/party/duel requests (except for friends/party/guild) (previously ASSBlock)

eePanels2

Profession launcher objects for any Broker display

Upcoming events.

Adds easier gear switching to FuBar.

XML import library

BossList

Tank statistics Data Broker plugin.

LD50_armor

Adds indicators to the sides of Grid frames.

Makes tracking reputation much simpler. By InSo(v)nIaX

Adds Outfitter set filters to AdiBags.

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

Displays both Kalecgos and Sathrovarr the Corruptor hit points during the encounter.