WowAce

Keeps track of time played and rested XP across your characters.

Searches bags/banks of all your characters/guilds.

Addon to provide a much nicer map

Nihilum Raid Tracker, originally written for the EU guild Nihilum.

Database of Trainer locations for HandyNotes

Provides data about all artifacts in the player's possession.

Enables user defined sounds for Party, Guild, Raid and Custom Channel chat messages.

Litmus

Generates and posts random Chuck Norris facts to a specified chat medium.

Auto roll greed, need, pass or manually roll on items.

Detox

lern2count adds ABinfo castcounts to spell and actions. It has a builtin reagentcount too.

FuBar_FarmerFu

Klappa

Gathers statistics on certain chance-on-use spells, also known as procs.

Tells you the Tiller, what food they like, and if you have fed them today for the quests A Dish for ...

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

Load manager for AddOns

BA3_SpellAbilities

Sphere