WowAce

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Uses linear regression and a log of hitpoint values to estimate how long a boss has left to die and reach execute range.

Allows for gold tracking across multiple time frames

Envenomous

Freaking geaR dEpendent Achievement checKer - Gear check for the Achievements 'A Tribute to Dedicated Insanity' and 'Herald o...

Provides info about spell teaching items.

Adds TargetIcon status to Grid2 (player / player-target).

BattlegroundFu for Broker

End of combat reporting for feedback on how your cast time was spent or wasted.

GigaItemAuction

Helps you keep track of your experience.

Provides bang-whispers for your professions.

Mutes Annoying Sounds

Reminds you to resummon your Ghoul

Shows you a typing indicator when people are typing to you.

BuffProtectorGnome

Displays a table for possible outcomes of incoming hits with their probability

Open those clams (and other containers)

A customizable buff/debuff display replacement for the default Blizzard frames (with right click cancelaura support).

SanityBags