The Friend OS leverages the computing power of the Internet to offer many of the features and functionalities of Chrome OS, Windows, Linux, Android, macOS or iOS, without the need to choose a specific hardware platform or proprietary software package. If you have a device that is connected to the Internet, you can use the Friend OS.

The FriendOS liberates you from Big Tech: It gives you control to create, collaborate, store and share information, data and content across all your devices in a secure private environment and access it anywhere on any device.

With its responsive desktop environment and client-side, javascript based technologies, Friend OS offers a new reality where you work and play online, independently from your local web enabled hardware. By supporting all screen formats, from mobile phones to laptops and VR, Friend OS is a single target through which you can reach the entire user market.

Friend OS aims to make the powerful emerging web technologies easy to work with. This is why we reach out to you, to help us enrich this platform with DOS drivers, modules, libraries and apps so that we can cover all of the interesting technologies out there that people use and love. In the Future, Friend OS will be to the cloud users what Linux is for machines.

Link:
https://friendsky.cloud/
Further Info/Docs:
https://github.com/FriendUPCloud/friendup

Oh, you can go here too:
https://friendos.com/
(Duh!)

This one is interesting too ...
It's an "emulated" disktop that you can run virtuals in ....
https://dustinbrett.com/