WowAce

oUF element for highlighting debuffs that are dispellable by the player

Adds a simple percentage threat status to Grid.

Simple and rich Death Knight rune customizations

ag_Pimpster

Tracks spiritual innervation on Garajal

"Your quest log is full". How many quests do you have in your log?

Adds Buff/Debuff icons to the grid frame.

VendorSearch adds search features when buying items from any vendor

CraftBot

FuBar_EpicCountFu

Joins the LFG channel automatically.

MorgBid

oUF_HolySmurf

Shows the spec of people around you in the tooltip.

Hunter 'Misdirection' activity and cooldown monitoring for raids/groups. 'Readiness' aware.

Provides training reminders to help decipher the Blizzard Spell Alerts.

Never forget which one in that 5-mob pull casts what spell again.

Aggro notification library.

Configurable dynamic combat logging extender module for TweakHub.

Adds TargetIcon status to Grid2 (player / player-target).