WowAce

Evaluates your gear

BigWigs_ThogarLaneColors

Shows more recipies in the profession window.

Notifies you of new calendar event invites and reminds of upcoming events on all characters and realms

FuBar_NetStatsFu

Facilitate better communication for loot councils

Provides access to all teleporting spells and items on right click of minimap button.

FuBar_TinyTipFu

aX_RaidStatusConfig

Allows combined aura detection. motw + gotw, all 4 mage int buffs, etc. in one status.

This addon helps with daily quests.

Damnation

Pop a chatframe warning about guild battle standard when boss health reaches 30%

Quickly builds /target macros for immediate use.

Welfare Epics

Adds a Crowd Control Tracker mode and data collection to Skada.

CompostLib

Color manipulation library.

Replaces the SkadaAbsorbs module with one that acts more like SkadaHealing, but includes shields.

Monitors AP when dots are applied, clearly showing current vs applied AP levels.