WowAce

Grabs bugs for the bug sack.

Toss those bugs inna sack.

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

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

Does stuff for sachmo

Provides one or many frames for dumping text into.

Library providing mappings between trade skill recipes, spells and created items

Makes the Blizzard options frame movable and resizable

OneCore is the centralized code shared between the OneBag Suite

Show what quests have changed

Compression and Decompression library

Parses ToC and adds About panel to Interface options

Ironi's Encounter Event Tracker

Mutt (Macro Update Target Tool) provides slash-commands that can patch the predefined targets in your macros.

PT3Browser

Tracks SendAddonMessage Spam

A simple slash-command-based addon for querying item information from the Blizzard servers via ItemIDs and SpellIDs.

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

A library to help with localization of Archeology dig sites

SysMon plugin for any DataBroker display.