WowAce

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

oUF_PowerSpark

Adds dungeon role icons to Grid2

A simple DataText plugin for ElvUI that shows all the relevant currencies for Battle for Azeroth.

oUF_HolySmurf

Grid status module that shows the remaining value of any effect tracked by AbsorbsMonitor

Marks ignored players in Grid2 with a color and text notification

Show a bar indicating the unit's power that can change color based on value.

Adds Yogg-Saron Sanity status to Grid.

ShadowedUnitFrames_SmoothBars

Show a five second rule on the player frame in SUF

Adds combat feedback to oUF.

Adds spell-based range checking to Grid, and the ability to check multiple ranges.

Shows names on NPC nameplates

An enhancement to the built-in raid frames to change color for debuffs.

Adds PvP status to Grid frames.

Adds Vengance text to Pitbull4 LuaTexts

Yet another HUD addon

Status for self

Hide frames of people you've ignored.