Dragonrend affects most other non mortal creatures. (Think about the 3 words that make up the shout.)
Dragons land and are briefly paralyzed. (Terror of a Finite Existence.)
Dwemer machines are paralyzed. (Crumbling Mechanics and Corrosion.)
Daedra permanently frenzy. (Driven to the Brink of Despair and Insanity.)
Undead flee for a short time. (Restored Shattered Fragments of Fear, Desire, and Agony.)

Fire Breath and Ice Breath shouts for the player have been changed.
Stage 1 of the shout remains unchanged.
Stage 2 of the shout has been strengthened to the effects of stage 3.
Stage 3 Unleashes an dragon style breath shout. 3 minute cooldown.

Alduin's firestorm shout is always at the maximum version. Level scale has been removed.

Fire and Ice Related Dragon Shouts
Dragons' fire breath, ice breath, and fireball shout have fear effects built in. (If you have mods that allow multiple followers, you will notice them
flee from ongoing fire breath and the like.)
Fire damage and Ice damage has been scaled differently.
The duration of the shout varies by the level scale.
Fire related shouts cause longer ongoing fire damage.
Ice related shouts cause slow effects.
The size of the blast resulting from Fireball and Iceball shouts grows with respective level scaling.

Several of the other shouts of each various stage have been adjusted in balance and cooldown times.

Ice form causes mediocre damage and freezes for longer.