WowAce

Omnibus

Allows the user to preview and track their progress in the collection of various transmogrification appearance sets

ArcHUD2

Entertaining kill-shot notification.

GrindStatus

MiniPet, Always keep your little companion with you, based on the work of Carra.

Litmus

Tracks vulnerability debuffs on multiple mobs

Open those pesky lockboxes

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

View bank, inventory, mail, equipped and guild bank contents from any character anywhere!

LDB display of currencies, gold totals and session / daily / weekly statistics for all characters on a server.

DaHud

Questing minion

Keeps track of performance of memory, latency, and framerate.

Improved Questing Experience

Does stuff for sachmo

FuBar_InnboundFu

Where the lore is at

Find five Ephemeral Crystals, get a pink hippogryph