WowAce

Displays information about the current zone on the World Map

Ironi's Encounter Event Tracker

Assessment

Dims action buttons.

Saves and restores your action bars.

Raid Frames using the oUF framework.

Alchemy data for Ackis Recipe List.

Displays Pet Info for Hunters and Warlocks. Also keeps track of Stables and Pet and Demon skills.

Additional information about player spells.

Adds manabars to the sides of Grid frames.

Shows the mirco menu and game menu in a clickable broker tooltip.

Displays online guild mates.

Database of Mailbox locations for HandyNotes

AltClick an item in your bag to add it a mail, auction, or trade frame, and alt-click to buy a stack if reagents.

AVR Encounters

Campaign maps for Warcraft Conquest Moon Guard server

Helps you decide which ability to use next according to priority you set

Check the consumable usage of your raid

eeShards

Keeps track of durability and pops up a dialog to repair when you go to a vendor who can.