WowAce

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

Whispers back the prices of sell runs that your guild does

Guild Admins Online

AutoGratz

Tracks Black Market Auction House auctions.

Angry Raid Points

BossList

Ankylos guild loot system

Angry Raid Points Client

Notifies you of new calendar event invites and reminds of upcoming events on all characters and realms

Tracking and ranking of dps/hps in a guild.

Aiue's Luck Point Handling Addon

Guild Recruitment Assistant

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

shows keystones from your alts, guild members and friends

AddOn to Manage Roster and DKP for the guild

In-game EPGP guild helper, supports standby, main/alt shared pools, minEP, offpecGP. Fixed price list with progress multiplier.

For the Seven Thunders guild

Save and send chat messages to many channels. Allows quick item and profession linking within your messages.