WowAce

Allows for easy congratulating when someone earns an achievement.

Puts a timer in /yell when you get Unbound Plague during the Heroic Professor Putricide encounter

QR Code builder library

Makes tracking reputation much simpler. By InSo(v)nIaX

FuBarPlugin-2.0

pMutilate

A FuBar plugin for MagicMarker

GearRating

Tells you which blob to kill at the Yor'sahj encounter in Dragon Soul.

RaidGroupNumber

Sneakily inspect how much gold your mouseover target has made so far.

SurgeonGeneral Listen CLient

Enables the filtering of items when you visit a vendor

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

SVG Render-bender

Tweak the tradeskill windows

Good old LibTourist-3.0 for WoW Classic Era

Fubar_ChannelWatchFu remade for Broker

KivinSpamGuard

AbacusLib