WowAce

A modular, lightweight and screen-estate saving grid of party/raid unit frames

Modular casting bar.

Creates and manages secure Action Buttons

Afflictions display and cleaning for solo, group and raid with advanced filtering and priority system.

Does stuff for sachmo

A library to help with localization of the output of UnitCreatureType.

Give whispers an instant messenger feel.

A library to help with localization of in-game subzone names.

Show item levels in the character frame

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

Officially the original source for where things are in the Broken Isles, in HandyNotes

Arena unit frames

The original source for where things are in Pandaria

Shared handling of alternate identity data between addons.

Officially the original source of knowledge of where things are in Draenor during Warlords, in HandyNotes

A library to help with localization of races.

Adds a Button to the Worldmap which toggle Handynotes

A library to help with localization of bosses.

Provides one or many frames for dumping text into.

A library to determine estimated range.