WowAce

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

LDB display for Oak Interrupts Broker

NRT_EPGP

Holy Power, Shadow Orbs, Rogue Combo Points and Monk Chi.

Shows optimal target to use various area healing spells

Add lines to ore and gem tooltips that show prospecting sources/results.

A data broker plugin showing your longest fight and your current fight time.

A simple addon that warns you if your pet isn't attacking while you're in combat.

TextSpy

Upcoming events.

Hourglass

Cartographer_Noteshare

Adds tier set number and difficulty indicators to tier item tooltips.

Helps to track outgoing mails

Protractor

It's a doodle pad for doodling with doodles.

Klappa

LootWhore

SpellWatch

A library to provide tools for formatting money and time.