WowAce

DeclineDuel

FuBar_SoulJarFu

A library to help with localization of Archeology dig sites

NabuFiveSec

A fully featured library tracking all ongoing absorb effects

Monitor the remaining duration on your Mysterious Eggs and other perishable items.

Show extra information about Jewels and Enchants in tooltips.

Show coordinates on minimap

Embeddable chat throttling library with traffic shaping and priorities

Keeps track of resurrection spells cast in a group

ShadowGreenLight helps you decide if recasting SWP/Corruption is worthwhile

tekSupport

NRT_EPGP

Gives a Smoother Quest Experience

Test whether the player can really dispell a buff or debuff, given its talents.

Allows customisation of login/logout system messages.

Adds aura indicators to unit frames

Provides the ability to suppress specific spellcasts like "Deaden" from your casting bars.

FuBar_NinjutFu

Shows your FuBar addons in your LDB display.