WowAce

Adds a Crowd Control Tracker mode and data collection to Skada.

Shows skills in a tooltip and allows them to be used.

GPriceEach

KivinLootzor

BigWigs_ThogarLaneColors

Plays amusing sounds whenever you skin a mob

LDB data source displaying character stats

Shows a countdown bar for the duration of auras (e.g. HoTs, DoTs)

Opens professions and shows their skill level.

DKP ingame management

Checklist and notes addon.

A raid buff tracker

Counts stacked lifeblooms and uses progressive colors to indicate the active number of HOTs.

Database of your death locations for HandyNotes

Overlays Archaology digsite icons on the flightmap

Bang!_Libram_Swap

Displays how much total honor you have from all sources.

Assistace for Blackhand (Mortar warning in P2, custom says for bombs and marks in P3)

Replacement of build-in loot frame

Shift-clicking on a user name in chat shows a tooltip with their whois information.