WowAce

Counts stacked lifeblooms and uses progressive colors to indicate the active number of HOTs.

Adds Buff/Debuff icons to the grid frame.

Adds a third text indicator to Grid.

Adds icons to the configuration menu for all standard Grid indicators.

Shows the group leader, raid assistants, and master looter in Grid.

iTargetingFrames

Configure which layout or profile to load on entering a zone

ag_Pimpster

Adds custom layouts for Grid

Makes the message dialog movable

Pet Battle Lite Frame

Show who is targeted by at least one enemy, and the casting progress of the incoming spell.

Continuation of Shadowed Unit Frames

Adds AFK status to Grid frames.

Status indicator that shows if a unit is hostile (probably mindcontrolled)

My plugins for KuiNameplates

Show a bar indicating the unit's Burning Embers count.

Show a bar indicating the unit's Soul Shard count.

Draws 3D portraits for main units that can be moved or resized at will.

Adds a simple percentage threat status to Grid.