WowAce

Shows the spec of people around you in the tooltip.

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

Accelerates Camera Zooming

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

Avion

Leveling guides for trade skill professions.

Track of your tradeskills across characters, create small buttons for them and track cooldowns.

Insanity resource tracker for shadow priests.

Nudge

Note + rep tracking for players, with guild data sharing.

Adds on-screen buttons for the farming tools and seeds.

Test whether the player can really dispell a buff or debuff, given its talents.

Provides quick notification (sound and visual) of your tanking status of your current target. Meant for tanking.

Set the clicking action for Grid buttons

Displays reagent count on spell action buttons

GUI Configuration Library

EasyDKP

FuBar_PetInFu

FuBarPlugin-2.0

Poppins