WowAce

For Developers (of Addons which uses LibWho-2.0): show queues and queries in realtime

wRlog

LDB Broker launcher for HealBot

Fudge

QR Code builder library

Forces LSM and LibSink to use specific textures and sinks.

Announces interrupts in the chat

TGuildFrame

Allows you to create icons, which can be customized greatly by user's input. CiR is more than just the usual cooldown tracker.

VisualThemes

AltClick an item in your bag to add it a mail, auction, or trade frame, and alt-click to buy a stack if reagents.

A fully featured library tracking all ongoing absorb effects

DelMapa

Make it easy to explain bosses in Raids.

TwiCo

TrapBar

Allow rule based automatic rolling on loot.

mHud_Threat

AnchorsAway

Automatic tracking of the current target's creature type. For the discerning PvE hunter.