WowAce

Item stat breakdown, analysis and comparison

Bulk mail reception made really easy

Auto repair + shows durability.

Point to quest POIs on your minimap

Deus Vox Encounters

Watches your chat, flagging missplled words, and offering correctly spelled suggestions.

Minimap addon of awesomeness. *chewing sound*. It'll nibble your hay pellets.

Lightweight Chat Improvements

Checks Raid Buffs/Flasks/Consumables. Tunable alerts for misdirects, taunts, cc breakage, rez, dispel and interrupt

Complete tradeskill information.

Provides access to all Portal and Teleport spells on right click of one button.

Plugs classical world style fonts into LibSharedMedia-3.0

Textures for Stop Motion

OneBag is a replacement for the default game bags that combines all the bags into one frame.

Unit frame addon using Ace3.

Entertaining kill-shot notification.

Tracks the Blood Shield for Death Knights.

EBB adds groups of bars to your screen showing you which (de)buffs currently affect your toon or some other units.

Show buffs on nameplates.

Smooth combat HUD based on ArcHUD2