WowAce

Show helper indicators for units conditions (buffs, states, etc).

Raid flares without problems with UI taint and errors, using mechanisms introduced in patch 4.3

Logs hunter's use of Feign Death

Customizeable UI to display the values tracked by AbsorbsMonitor

Displays the internal cooldown of Eclipse as a ClassTimer bar

Warn players about a specific aura (buff/debuff) at a specific stack via whispers and icons.

Adds a /rl command to reload the UI

ReforgeSummary

aX_RaidStatusConfig

Medley

Makes keyboard bindings for moving the camera

Baggins_ItemRack

Adds PvP status to Grid frames.

Mana regen rate display.

Tattles to your default chat frame who has used their taunt nearby

Gives equipped and overall iLvl to indicate the quality of a character's gear.

Keep you bags clean with easy loot filtering and removal.

Simple LibDataBroker based launcher to toggle MonkeyQuest.

Praise the Sun! \[T]/

FuBar2