WowAce

Adds a button to your character and inspect window that shows a summary of gear enchants and gems.

FuBar_FuXPFu

Adds options to create customized layouts from within grid.

FuBar_CheckStoneFu

Helps you automate selling stuff.

FuBar_AmmoFu

Numen

Considers an item against all the items you have to determine whether or not it is an upgrade

Configuration for LibToast notifications.

Angry Boss Reminders helps raiders switch to the proper talents, glyphs, and gear for each boss during a raid.

Enhances the StackSplitFrame with numbered Buttons, a '1-Click Mode' and a 'Auto Split Mode'.

QuestAnnouncer

Cancellation

Save and send chat messages to many channels. Allows quick item and profession linking within your messages.

GUI Configuration Library

Shared handling of media data (fonts, sounds, textures, ...) between addons.

Shows optimal target to use various area healing spells

HunterAEP

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

FuBar_ExperienceFu