WowAce

HazLoot

Monitors AP when dots are applied, clearly showing current vs applied AP levels.

Merchant, gossip and taxi tweaking module for TweakHub.

Transcendence Monitor for Monks

SurgeonGeneral Listen CLient

Notifies you of experience gains

A raid buff tracker

LD50_abar

VersionChecker

Keeps track of resurrection spells cast in a group

Lists Pots and Herbs you got on all chars and allows you to specify color coding

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

Shows a frame to track your debuff on Malygos in phase three.

Used to visualize and change values of variables/variable-trees in game

Sniff

Allows you to loot BoP items without prompting when not in a group or raid

RaidAgent

LDB data feed plugin designed to display various statistics derived from the Recount addon.

Allows you to create icons, which can be customized greatly by user's input. CiR is more than just the usual cooldown tracker.

DarkCandy