WowAce

Does a /who search of multiple dungeons.

View any characters bank and bags from anywhere. Stores items in Baggins submenu "Anywhere Bags."

Toolset for tanks, providing information on taunts and other valuable information.

Control screenshot format and quality via LDB displays

Prints combat duration to chat after each fight

NRT_EPGP

Persists collapsed state of headers across wow sessions.

FuBar_GemWatchFu

Warnings about tanking specific abilities

Adds item values to chat messages.

Lists and/or reminds people missing flasks or food buffs at every ready check.

BigTrouble

Libary for cleanly inspecting other players

Replacement for the default nameplates.

Durability Data Broker plugin.

Death reports

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

A Data Broker add-on for quickly switching your specialization with gear set and loot specialization.

An easy-to-follow guide for visiting all of the Lunar Festival Elders.

Broker launcher that switches specializations when clicked. Also hides spell learned spam.