WowAce

Building a Better Mailbox

Keep your pet fed

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Provides the ability to suppress specific spellcasts like "Deaden" from your casting bars.

Cryolysis

Disease Tracker for Death Knights.

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

Cartographer_Fishing

A library to handle rearrangement of blizzard's frames when bars are added to the sides of the screen.

On login, displays changes to your guild since the last time you logged in.

Leveling guides for trade skill professions.

Aperture

FuBar_OutfitterFu

Augmented Virtual Reality. Draw and add markers in the 3d world.

DHUD2

SinkLib

Announces interrupts in the chat

Automatically sells low quality gray items and selected white items to the vendor.

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

FuBar_TimerFu