WowAce

A collection of useful (guild management) tools and utilities for smarter than average bears.

StreamBuddy is a World of Warcraft AddOn that will make your life, as a streamer ingame, easier!

Searches bags/banks of all your characters/guilds.

Facilitate better communication for loot councils

Friends & Guild Data Broker plugin.

Nihilum Raid Tracker, originally written for the EU guild Nihilum.

Angry Raid Points Client

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

Note + rep tracking for players, with guild data sharing.

YssGuildShop

Allows customisation of login/logout system messages.

Calendar improvements

Loot management tool

A fork of BananaDKP.

EPGPAttendance is a mod that estimates raid attendance based on observed changes in EP.

Bug fix for the Blizzard calendar -- prevents unexpected window closure while editing events

Does stuff for sachmo

BankAccountant

Send Mail to Groups

Tracks Black Market Auction House auctions.