WowAce

AnchorsAway

Quixote

Quest information

Tooltip scanning library.

Saves contents of your guild bank and sends/receives updates over the addon channel

Provides information about the player's bodyguard.

Library to help with querying unit talents.

SinkLib

Keeps track of healing spells cast by everyone in a group.

Library to provide visual bar creation and management.

Manages the SavedVariables of your addon with a layered hierarchy of settings.

Test whether the player can really dispell a buff or debuff, given its talents.

QR Code builder library

A library to help with localization of Archaeology artifacts

Library to aid in the classification of Mounts

Library to help with querying unit talents.

Library providing mouse-click support for LibQTip-1.0.

TableTopLib

A library to handle rearrangement of blizzard's frames when bars are added to the sides of the screen.

A fully featured library tracking all ongoing absorb effects