MMOs similar to Star Citizen

Star Citizen is Cloud Imperium Games' space sim built on MMO sandbox foundations, where your ship is a place you walk through and repair by hand, and every profession — mining, salvage, hauling, medicine — runs on its own set of rules.

The games below were picked along three lines: sandbox freedom with a player-driven economy, detailed flight and ship-system simulation, and crews sharing one vessel between several stations. Some cover one of those; a few manage all three.