WowAce

Toolset for tanks, providing information on taunts and other valuable information.

GemCensus inspects people and records which gems they have socketed. Then displays which gems are the most popular.

Tracking and ranking of dps/hps in a guild.

BankAccountant

Client for MagicDKP which handles standby calls and bidding on items.

Outdated! Please use 'XLoot', available on Curse and WoWI

Tracks whispers and conversations

Desesperated announcing to clearly show the skillings of act inplay.

Transcendence Monitor for Monks

Draws some lovely 3D portraits in the standard Blizzard artwork.

Replacement for default bags.

lugMD

Shows the health of the player's current bodyguard.

OneView

Monitor the remaining duration on your Mysterious Eggs and other perishable items.

DataBroker display using minimap buttons.

A frame designed for each specialization of druid's watching their main power and important buffs/debuffs

Shows your standings with the factions.

Reforges stuff

It's a doodle pad for doodling with doodles.