WowAce

Shows activity for hidden ChatFrames by making their tabs flash.

Good looking, smoothy and helpful nameplates

Shows the spec of people around you in the tooltip.

A fork of BananaDKP.

Allows you to loot BoP items without prompting when not in a group or raid

wRlog

Calculates incoming damage avoidance and mitigation

A standalone version of Angry Assignments to create and display personal notes on your screen.

Rep2 displays a message, which shows how much reputation you gained, and how much is needed until the next standing.

Fancy up the PlayerPowerBarAlt frame

Estimated time until current target will die.

FuBar_uGuild

BuffProtectorGnome

Provide plenty of links

Display the global cooldown around your cursor. (+ other stuff)

ComboSounds

aUF_RangeCheck

GemList

Allows for easy congratulating when someone earns an achievement.

A Library for stat conversion, calculation and summarization.