WowAce

Give whispers an instant messenger feel.

Library that handles chat output.

Simple and Advanced combined - Bartender4 ActionBar AddOn

Modular damage meter.

Adds spec switching support to individual AceDB-3.0 databases.

Replacement for the default UI's StaticPopup dialogs.

Compression and Decompression library

Handy notes for your maps

A library that handles the basics of "window" style frames

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

Library providing multi-column tooltips.

Adds an addon manager in game via the 'Addons' menu. Special support for multi-part addons. Based on rMCP by Rophy.

A library to help with localization of races.

Tracks rare drops, including companions and mounts

Replacement for ActionButton_Show/HideOverlayGlow APIs

Timer bars with that extra sweetness.

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

Provides one or many informational windows with optional interactive widgets.

A library to help with localization of bosses.

Provides one or many frames for dumping text into.