WowAce

A 'channeling spell'-tracking addon for Affliction Warlocks. Drain Soul, Drain Life/Harvest Life and Malefic Grasp.

Reminds you if your flask/elixir and/or Augmentation Rune and/orfood buff is about to expire or has expired

Broker2FuBar

Combat log replacement

Collect data about you myth+ challenges

SanityBags

Shows a circle on the minimap to indicate spell range

Allows for easy congratulating when someone earns an achievement.

Priority 3 loot announce addon

Fade Blizzard Raid Frames

Displays bars depending on your professions

TradeBar

SpellWatch

BuffProtectorGnome

Smooth combat HUD based on ArcHUD2

Warns you with sounds when you gain different shaman spells.

Displays events from Calendar for upcoming week in tooltip.

FuBar_ArenaFu

Handles the assignment, coordination, and announcement of many parts of the Lich King encounter in Icecrown Citadel.

NCHide