WowAce

GridStatusStrings

oUF_PowerSpark

Adds "line of sight" status to Grid (after the error occurs).

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

Adds PvP status to Grid frames.

oUF_HolySmurf

Ancestral Fortitude / Inspiration tracker for Grid

Adds dungeon role icons to Grid2

oUF Layout

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

Show a five second rule on the player frame in SUF

Status for self

Adds 4 text indicators to the Grid frames.

BlizUF_LMH4

Bar to display state of Incinerate Flesh debuff.

Make the unit frame fade if out of range.

Shows names on NPC nameplates

Adds Statuses for group: leader / assistant / master looter.

Adds functionality to show a bar as a deficit

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