WowAce

Enables cooldown notification between players and allows party members access to each-others spell books.

LDB display for Oak Interrupts Broker

Simple, nice-looking power bar addon for all classes.

Assistance for the Ra-den encounter. (Unstable Vita order, ball kill order)

Display and change minimap tracking modes from your FuBar.

Broker launcher that switches specializations when clicked. Also hides spell learned spam.

ERP

Improvements to the standard Blizzard Eclipse bar for balance druids. Use /ebp for the config screen.

Small addon to copy chat lines.

Shows who controls Wintergrasp and the time until the next battle.

Collects and displays census information. This AddOn is licenced under the GNU GPL, see GPL.txt for details.

Adds 3 indicators to each side (top, bottom, left and right).

Tracks Black Market Auction House auctions.

Fancy up the PlayerPowerBarAlt frame

GratuityLib

Lists and/or reminds people missing flasks or food buffs at every ready check.

"Shows Call To Arms status in an LDB data provider."

Shows loot information in item tooltips

NielasAran

A helper addon for the achievements "Let It Snow", "Fistful of Love", "Shake Your Bunny-Maker", "Check Your Head", and "Turkey Lurkey"