WowAce

Keeps track of time played and rested XP across your characters.

Piece of mind by being one with your class.

Prompts for canceling of pet battles if no rare pet is found in the opposing team.

Nudge

Draws some lovely 3D portraits in the standard Blizzard artwork.

Shows your standings with the factions.

Aperture

mHud_Threat

DreamChat

LibRock-1.0

Note + rep tracking for players, with guild data sharing.

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

Shows the minimum durability of equipped items on the stats frame.

Keeps track of resurrection spells cast in a group

Set the clicking action for Grid buttons

FuBar_WhisperFu

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

EUF is an enhance of wow original unit frames, provides hp with both value and %, and optional 3D portrait. Simple and Useful.

FuBar_DuraTek

Improve your barbershop experience with appearance profiles!