This addon has your companion and battle pets randomly send things to chat. They will also respond to targeted slash commands-i.e. if you target them and wave they will respond back.

RCLootCouncil module that adds full EPGP support and customization.

Tool to allow cross-language communication within your faction.

An addon designed to make it easier to do quests as a group.

Don't miss messages, LFG and trade in all that spam!!!

Configurable chat identifier, auto-labels messages in your channels and tells with your main's name

ViksUI Interface

Allows you to easily access emotes, saving the time and hassle of memorizing the emote commands! Ported from TitanEmoteMenu ...

easily link your achievements to the LFG leader

Tell long stories to other players

Tongues

A Simple World of Warcraft Spam Filter!

Simple & fast loot council management addon

Easy Spell Announcements! Amongst other things.

Group Quest Tracking

Tracks chat per player. Includes a feature to mouseover players and see their chat only.

Unlocks your chatbox and lets you paste or type unlimited text into it.

Extra Utilities for RCLootCouncil

Tracks player taunts and displays who they taunted, what ability they used to taunt, and if it failed in some way.

Basic Chat Mods!

Removes multiple annoying confirmation popups that appear when doing routine tasks.

Common communication channel as a replacement for guild chat in guild confederations.

Maintain an ignore list across all characters and servers, block annoying chat/spam

PGF - Made finding groups quick and easy