WowAce

Rep2 displays a message, which shows how much reputation you gained, and how much is needed until the next standing.

Dims action buttons.

Tells you who bought your auctions.

Allows raid leaders to view information on raid or guild member equipment information

Mapster's Minimap brother

Generates and posts random Chuck Norris facts to a specified chat medium.

Disease Tracker for Death Knights.

QuestAnnouncer

Announces Mage Spells in chat.

Captures chatframe Tradeskill Links for later reference in an easy to read format

Pet Theory

HazLoot

FuBar_ChatAlertsFu

FuBar_ExperienceFu

Provides access to all teleporting spells and items on right click of minimap button.

Show what quests have changed

Utility library with shared functions and data for various addons by NeoTron.

Displays information about the current zone on the World Map, for WoW MoP Classic

LDB data source for herb, ore and skinning node data

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...