Elementarist
Elementarist tries to optimize DPS output for elemental shamans. It advise what spell you should cast next.
TotemTimers
TotemTimers aims to help managing totems, shields, and weapon buffs, showing additional info about active totems (range, cooldowns) and provides additional totem sets
OmniCC
OmniCC for your CDs
BigWigs
I reccomend BigWigs for your raiding needs.