WowAce

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

Add-on that shows in a unit tooltip window a number of killed mobs of the same kind

Displays friend notes in unit tooltips, at logon, and in /who results.

Dynamic item DKP calculation

Provides shareable notes and other information for your guild, party and raid community.

Shows the spec of people around you in the tooltip.

Watch tooltip updates to announce when you find specific objects

Should I send that recipe to my alt?

Healer gear benchmark

Makes your item stats shine!

Sneakily inspect how much gold your mouseover target has made so far.

Library providing mouse-click support for LibQTip-1.0.

"Your quest log is full". How many quests do you have in your log?

Creates a broker plugin for all your broker launchers

Allows the user to customize the the tooltip with lua-scripts

Tooltip of socials button will now show which friends are online

Show extra information about Jewels and Enchants in tooltips.

LCDs for WoW

Mob respawn timers

Adds tier set number and difficulty indicators to tier item tooltips.