DLC:
Bring Down the Sky
Genesis
Zaeed – The Price of Revenge
Kasumi – Stolen Memory
Lair of the Shadow Broker
Firewalker Pack
Overlord
Normandy Crash Site
Arrival
Genesis 2
From Ashes
Mass Effect 3: Extended Cut
Leviathan
Omega
Citadel
Equalizer Pack
Aegis Pack
Firepower Pack
Cerberus Weapons and Armor
Arc Projector
ME2 Alternate Appearance Pack 1
ME2 Alternate Appearance Pack 2
ME3 Alternate Appearance Pack 1
Firefight Pack
Groundside Resistance Pack
Recon Operations Pack
Collector's Weapon and Armor
Terminus Weapon and Armor
M-21 Incisor
Blood Dragon Armor
Inferno Armor
Recon Hood
Sentry Interface
Umbra Visor
N7 Warfare Gear
AT-12 Raider
Chakram Launcher
M-55 Argus
M-90 Indra
Reckoner Knight Armor
N7 Collector's Edition Pack
It lacks Pinacle Station of ME1, Bioware lost the data of that little DLC and they couldn't even include it on the PS3 release years ago. That said that DLC was totally forgetable and less than 1h of story content. The only good thing is that it was the only way to see the Earth from the moon.