WowAce

EasyTrack

Buffalo

cgCrafty

CharScanner scans Basic Character Data, Talent Specifications, Equipment, PvE/PvP Achievements, PvE Boss Kill Statistics and ...

Bind spells, items, and macros to keys, without using action buttons

Auto sizes frame layout depending on group/raid size or predefined zone data

Shows Chat as Combat Text

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

A plugin for OneBag to make your keyring the same texture as OneBag/Bank.

LilSparky's Workshop mod for Trade Skills

Displays info about who rolled Need/Greed/Pass on items that are currently rolled for

Accelerates Camera Zooming

eePanels2

Heads Up Display with Player and Target Info

Hemlock

CraftList

Swiss Army knife for instances, including player tracking, ignore buttons, loot tracking, notes, and more.

Tells you if you're buffed

Provides information about the player's bodyguard.

Combat Alert