WowAce

Show what quests have changed

Makes the default frames moveable via simple drag and drop

A powerful, comprehensive utilty for displaying graphics and information based on buffs, debuffs, and other triggers.

Apathy skin for Masque.

Caith skin for Masque.

Cirque Skins for Masque

Entropy skins for Masque.

Kiwi Plates

Custom widgets for AceGUI-3.0 and AceConfigDialog-3.0.

Auto repair + shows durability.

Tracks rare drops, including companions and mounts

Show item levels in the character frame

Show a texture on demand

Point to quest POIs on your minimap

Library of data about what items tier tokens can be turned in for

Library to check whether an item is equipable / appropriate for a given class

Show vignette icons sooner

Open all your mail

Should I send that recipe to my alt?

The original HandyNotes source for where things are in Battle for Azeroth