WowAce

Party Ability Bars

XArt

Keeps track of important de-/buffs in a splash screen

Shows a countdown bar for the duration of auras (e.g. HoTs, DoTs)

Transliterate string

ArenaPointer

A library that tells wether a item is a quest item or not (equipped or in bags)

TrickOrTreat

Frame layout manager for side panels.

Configurable dynamic combat logging extender module for TweakHub.

Shows the group leader, raid assistants, and master looter in Grid.

GPriceEach

User-configurable protection for your inventory. Automatically buys back mistakenly sold items.

Library to aid in the classification of Mounts

vChat

KivinSpamGuard

Simple loot specialisation display with selection in tooltip.

Paints your known blueprints red.

Advanced Chat Filtering and Spam Blocking Addon

Assistance for the Ra-den encounter. (Unstable Vita order, ball kill order)