WowAce

Rewrite myBindings. An enhanced key bindings interface.

Displays classes and specialisation dependent stat priorities provided by icy-veins.com

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

Show a texture on demand

Acolyte2

Tracks the precise arrival & departure schedules of boats and Zeppelins around Azeroth and displays them on the Mini-Map and ...

Display bag usage on each of your bag slots.

Client for MagicDKP which handles standby calls and bidding on items.

Cancellation

Options for TinyTip

TrackingBar

Adds manabars to the sides of Grid frames.

OneBag is a replacement for the default game bags that combines all the bags into one frame.

FuBar_WhisperFu

Display an informational fighter jet style HUD while flying or riding

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

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

FuBar_InnboundFu

aUF_RangeCheck

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.