WowAce

Manages tracking of raid attendance, loot, and more.

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

Allows customisation of login/logout system messages.

A fork of BananaDKP.

FuBar_uGuild

Uses guild notes to add alts' main names to chat windows and other places

Gives a score for your kit allowing easy comparison with others, also colour codes kit based on appropriateness for your level.

JasonQuest

A tool to appraise, estimate, or judge your equipment against the equipment of others.

EasyDKP

Calendar improvements

Loot management tool

Combine

Allows for easy congratulating when someone earns an achievement.

Creates new chats with guild channel functionality

Eliminates the spam from the chatframe and sums it up in a broker plugin.

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

On login, displays changes to your guild since the last time you logged in.

EnhancedLFG

Manager for DKP points. Requires DKP - Bidder as main Graphic User Interface.