WowAce

Guilder brings common guild-raid tasks together in one convenient place.

RaidAgent

Tankalyze

Shows skills in a tooltip and allow them to be used. Also keeps track of Cooldowns.

A library to track nameplates.

RicoMiniMap

Keeps track of your reagents for buffing.

Monitor the remaining duration on your Mysterious Eggs and other perishable items.

SpyGnome

A Library for stat conversion, calculation and summarization.

Smooth group roll frames

Separate indicator for your HoTs with timer.

GotWood

FuBar_ItemDBFu

ClosetGnome_Switcher

Keeps track of durability and pops up a dialog to repair when you go to a vendor who can.

Should I send that recipe to my alt?

A jukebox for playing wow embedded music.

A filter tool for blizzards TradeSkillUI

Reno is a slash-command that can patch predefined options in a macro to change which abilities will be chosen.