WowAce

Embeddable library to track raid/party roster

TrickOrTreat

A FPS Data Broker plugin.

Puts a timer in /yell when you get Unbound Plague during the Heroic Professor Putricide encounter

Fancy up the ExtraActionButton frame

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

Monitors AP when dots are applied, clearly showing current vs applied AP levels.

Adds tier set number and difficulty indicators to tier item tooltips.

Keeps tracks of /rolls.

Dropin replacement library for SetBackDrop

Fubar Plugin for Simple Soulstone

Tracks specialization and talent data for group members

KC_PlayerFramePlus

EquivalencePoints

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

Adds Raid Target Icon status to Grid (Player or Player Target).

Reminds you to Life Tap and Dark Pact

GratuityLib

RS_ClassColors

opens/closes all bags when at merchant (instead of only the backpack)