WowAce

Remember locations that city guards direct you to for HandyNotes

Configurable Castbars

Collects Herbs, Mines, Gas Clouds and Fishing locations and adds them to the worldmap and minimap

Display aura information inside action buttons

A simple combat log that displays events similar to SCT

Bulk mail reception made really easy

Displays Instance Maps

Prat

Auto repair + shows durability.

mount and companion manager

tracks and share quests between your party

A library to provide unit-oriented tags to LibDogTag-3.0

Provides access to all Portal and Teleport spells on right click of one button.

Babble-2.2

Automatically enables or disables combat logging based on location.

MorgDKP

Create panels for customizing your UI, sucessor to eePanels

Tracks vulnerability debuffs on multiple mobs

Adirelle's unit frames, based on haste's oUF.

Adds mob patrol paths to your map.