WowAce

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

HereBeDragons is a data API for the World of Warcraft mapping system

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

Adds a Button to the Worldmap which toggle Handynotes

Tracks Raid/Instance/World Boss lockouts for all your characters, daily/weekly quests, currencies, trade cooldowns, and more!

A fancy LDB reputation display, show faction reputation and reputation change history

Give whispers an instant messenger feel.

Tracks rare drops, including companions and mounts

PvE Status Frames

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

Changes the look of the default UI

Dropdown library for Ace3 options, extensible to other options formats. Works ok.

Library handling communcation for Magic* addons

Simple library that handles multiple levels of logging.

Arena unit frames

Displays additional information for Mythic Keystone dungeons

Timer bars with that extra sweetness.

UIFrameFlash to Animation conversion library for Floating Chat Frame functions.

Allows addons to easily create a lightweight minimap icon as an alternative to heavier LDB displays.

Simple AceGUI3 dropdown item classes for font/statusbar/sound/etc.