WowAce

Smooth group roll frames

Doublerightclick casting, autolure and sound enhancing

Mark My Words

This will keep track of how much you have paid per item in your inventory. Only one of (Auctionator, Auctioneer, AuctionLite,...

Bidder

Reorients the camera to be behind the character after a charge.

DeuceCommander

lugMD

CharScanner scans Basic Character Data, Talent Specifications, Equipment, PvE/PvP Achievements, PvE Boss Kill Statistics and ...

Tells you who bought your auctions.

Ironi's Encounter Event Tracker

Show what quests have changed

LibDogTag-2.0

Highly-configurable shield / absorb tracker.

Provides information of tradeskill and crafting materials that are in the banks and bags of your characters.

A library to return spell duration and debuff type of a spellID.

BananaBar2

Utility library with shared functions and data for various addons by NeoTron.

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

Shared handling of media data (fonts, sounds, textures, ...) between addons.