WowAce

Should I send that recipe to my alt?

Does stuff for sachmo

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.

XArt

A library to handle rearrangement of blizzard's frames when bars are added to the sides of the screen.

A fork of BananaDKP.

Communicates with guild members for their positions on the world map

Watch tooltip updates to announce when you find specific objects

Keeps track of your reagents for buffing.

Good looking, smoothy and helpful nameplates

InfiniBar-2.0

Combine

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

BananaBar2

Angry Boss Reminders helps raiders switch to the proper talents, glyphs, and gear for each boss during a raid.

FuBar_RegenFu

Generate a macro with random mounts

QuestAnnouncer

Tracks your keystones

Sheppard