WowAce

Show extra information about Jewels and Enchants in tooltips.

Fix replacement tokens in Blizzards Lua/C Code

LibDataBroker plugin showing some random XP related data

Shift-clicking on a user name in chat shows a tooltip with their whois information.

Never forget which one in that 5-mob pull casts what spell again.

Keeps track of Gimps and warns you if you end up grouping with them.

Item link modification

LCDs for WoW

Mob respawn timers

Shows what stat was reforged in item tooltips.

Adds information about the items tokens can purchase and vendor location to tooltip

Creates a broker plugin for all your broker launchers

Enables RatingBuster to calculate selected buff effects even if you don't really have them

Tools to easily compare gear among party members.

Addon to add more information on a Tooltip to the GuildRoster

LibQTipClick-1.0

Ratings

Shows the Guild Achievements Points and Members in the tooltip

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

Very very simple tooltip