WowAce

Priority 3 loot announce addon

Give logical progression of Mining, Herbalism & Skinning. Will not be updated with WoD zones

Shows the health of the player's current bodyguard.

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

ImprovedRWF

Generate a macro with random mounts

Fires events whenever a raid member "fails".

FuBar_AmmoFu

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

ChatHighlighter

Provides access to all teleporting spells and items on right click of minimap button.

XP and Reputation bars

Raid level alternative player power warning (Atramedes, Cho'gall, Lord Rhyolith)

ComboSounds

FuBar_TinyPadFu

Library to help with querying unit talents.

Displays the time until the next battle and more.

Collect data about you myth+ challenges

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

Shared handling of media data (fonts, sounds, textures, ...) between addons.