Dune: Adventures in the Imperium takes players into a deep future, where fear is the mind killer, and the Spice must flow. The Imperium is a place of deadly feudal politics, mysterious abilities, and slow blades coming for you in the dark. Noble houses constantly strive for power, influence, and vengeance. Players build their House, carve their places in the universe or possibly rebuild an ancient lineage and fight for the Imperial throne.
The campaign I am currently running uses the Foundry VTT, Syrinscape, and Discord. Use of all of those services are free to players. Foundry VTT offers a simple, but powerful virtual table top experience which is accessible through most modern web browsers with a broadband connection. You can join the campaign by signing up on Start Playing Games.
We play using the rules in Dune: Adventures in the Imperium from Modiphius which is available on DriveThruRPG as a PDF or you can buy the print game at your local game store.
I use the official Fantasy Grounds Unity ruleset to run my games. Players who play in my games do not have to buy this ruleset, but if you are thinking of being an online Game Master for Dune: AITI, I would recommend it.