Ideal OS: Rebooting the Desktop Operating System Experience

All applications become small modules that communicate through the message bus for everything. Everything. No more file system access. No hardware access. Everything is a message.

If you want to play an mp3 you send a play message to an mp3 service. You draw by having the compositor do it for you. This separation makes the system far more secure. In Linux terms each app would be completely isolated through user permissions and chroot, or perhaps all the way to docker containers or virtual machines. There's a lot of details to work out, but this is very doable today.

Module apps would be far easier to write than today. If the database is the single source of truth then a lot of the general work of copying data in and out of memory can go away. In the music player example, instead of the search field loading up data and filtering it to show the list, the search field just specifies a query. The list is then bound to this query and data automatically flows in. If another application adds a song to the database that matches the search query, the music player UI will automatically update. This is all without any extra work from the app developer. Live queries make so many things easier and more robust.