WowAce

Automate talking with the chatty gnome at Chimaeron's lair

sRaidFrames plugin - adds POH range indicators

TweakHub module to make your inbox a little friendlier.

GatherMate_CartImport

LibCooldown-Spell-2.0

Adds 4 text indicators to the Grid frames.

Shows how many epics (and other qualities) you are wearing

Vigilance tracking for Protection Warriors

Tracks money/tokens across all your characters; /goldwatch for options.

Tracks Prayer of Mending and changes color based on the number stacked

Adds Auctioneer "bought for" filters to Baggins ("disenchant", "vendor", etc)

Strips unwanted UI elemeents..

Remove the gryphon graphics on end of action bar.

Hides reagent counter on action buttons when you have a glyph that removes reagent requirement.

Adds combat feedback to oUF.

Fixes the TradeSkill search bar

RollWatcher

Yet another HUD addon

LibGUIDRegistry-0.1

Reduces achievement spam when a group of people earn the same achievement.