WowAce

Shared handling of alternate identity data between addons.

A UI for searching the guild roster.

Displays online guild mates.

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.

A FuBar plugin for Converge Guild Officers.

View an image of your guild vault from anywhere.

Displays online guild mates.

Angry Raid Points

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

Searches bags/banks of all your characters/guilds.

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

Raid loot tracking and text generation

Loot management tool

Allows for easy congratulating when someone earns an achievement.

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

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

FuBar_uGuild

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

YssGuildShop