Yo practicamente no uso addons.
Acá dejo un par que uso y otros que me parecen útiles para testear. - Versión CATA -

Ackis Recipe List - Ackis Recipe List es un addon que escanea tus habilidades comerciales y provee información de cómo obtener las recetas.
http://www.wowace.com/media/files/61...List-2.3.3.zip

Bagnon - Bagnon merges all of your bags into three windows: inventory, bank and guild bank. Beyond the basic all-in-one functionality, Bagnon also provides
http://legacy.curseforge.com/media/f...non_4.3.25.zip

DrDamage - displays the calculated damage or healing of abilities with talents, gear and buffs included on your actionbar buttons. The addon also adds various statistics to the tooltips in your spellbook and on the actionbar.
http://www.wowace.com/media/files/61...mage-r1673.zip

Xperl -
http://www.wowace.com/media/files/61...XPerl-r667.zip

Coordinates - This addon will show coordinates on the minimap as well as on the bottom of the world map.
http://legacy.curseforge.com/media/f...oordinates.zip

Quest Completist - Enables you to see what quests you have completed, and what ones you still have to do. Supports server query, allowing you to query the blizzard server for all quests you have completed in the past.
http://legacy.curseforge.com/media/f...st_v0.99.7.zip

Everyquest - EveryQuest is a Quest History tracker and quest list window. Integrates with Lightheaded to show any comments for any quest in the game. Create chat links by shift-clicking the quest name.
http://www.wowace.com/media/files/50...17-release.zip

DBM
http://legacy.curseforge.com/media/f...clysm-Mods.zip

Notes 4.13
http://legacy.curseforge.com/media/f...Notes_4.13.zip

URNotePad Ver 1.3.0
http://legacy.curseforge.com/media/f...Pad_v1_3_0.zip

idTip 5.2 - Dice el ID de las cosas
http://legacy.curseforge.com/media/f.../idTip-2.2.zip

Chatter 4.3.4 Alpha
http://www.wowace.com/media/files/61...7-geaaf3ba.zip