WowAce

Shared handling of alternate identity data between addons.

Tracking and ranking of dps/hps in a guild.

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

View an image of your guild vault from anywhere.

A UI for searching the guild roster.

Allows for easy congratulating when someone earns an achievement.

Displays online guild mates.

Angry Raid Points

Keeps account of attendance and loot for raids, parties, bgs, arenas and solo for questing.

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

Displays online guild mates.

Angry Raid Points Client

Bidder for DKP points. Usable as standalone bidder, or with DKP - Manager to manage points.

Searches bags/banks of all your characters/guilds.

Interface for addons to include extra information on the GuildMemberInfo frame.

Friends & Guild Data Broker plugin.

Manages tracking of raid attendance, loot, and more.

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

Provides shareable notes and other information for your guild, party and raid community.

A FuBar plugin for Converge Guild Officers.