WowAce

WoWonid

FuBar_ChatAlertsFu

GuildFilter

This is an add-on to block incoming guild/party/duel requests (except for friends/party/guild) (previously ASSBlock)

Artifact power bar support for oUF layouts

Shows you which bosses you've killed next to the raid finder frame.

Scaffold

Makes the Battle Objectives Frame movable

Adds tooltip for debuffs (and other things? you found out: no).

PriceTag

Make your whole party/raid aware of whats happening during and after a readycheck

A customizable buff/debuff display replacement for the default Blizzard frames (with right click cancelaura support).

Whats

SalvationKiller

iTargetingFrames

MiniChat

Shows all the targets in the raid

Hold a key to temporarily center and magnify the Minimap.

Mail plugin for any DataBroker display.

Uses linear regression and a log of hitpoint values to estimate how long a boss has left to die and reach execute range.