WowAce

Calculates optimal reforging for given weights/caps.

Cartographer_nnTrainers

Considers an item against all the items you have to determine whether or not it is an upgrade

Gives detailed descriptions of particular localities, as zones or instances, and provides optional TomTom integration.

BuffMe

Tracks profession specific cooldowns and items across all your characters

Ace2'd version of the "Visor" frame-modifictaion AddOn. All code in this addon is copyrighted 2006 by its authors, which are...

FuBar_TrainerFu

Sheppard

Standalone of FuXPFu - Now sticks to anything!

Automates bites during the Blood-Queen Lana'thel encounter in Icecrown Citadel

RoleCall allows you to easily see the talent specs and roles of everyone in your group.

TrackingBar

A library that handles the basics of "window" style frames

OneCore is the centralized code shared between the OneBag Suite

Swiss Army knife for instances, including player tracking, ignore buttons, loot tracking, notes, and more.

FuBar_ItemBonusesFu

Announces Mage Spells in chat.

StarVisuals displays various data visualizations

Adds various hearthing items to AdiBags virtual groups