There are lots of use cases, these are the few we have identified so far, but there are certainly many more:

* REPLs for any programming language (Python, ruby, nodejs) for trying out ideas or libraries without installing an environment or when on-the-go

* In education, to let students fiddle with languages or the whole linux system without the friction of local installation, which can break. At the end of the class refresh the tab and you are ready for another session

* Virtualizing legacy native apps that are common in the enterprise sector. With WebVM they can be converted to Web apps. These apps will be mostly Windows-based and our next big project will be to get WINE to work well in WebVM, with an initial focus on gaming.

Fundamentally WebVM brings the convenience of virtualization to lots of users that can not yet benefit from it. Not everybody is able to use docker or VirtualBox on its machine.

In the enterprise sector, remote virtualization via Citrix or similar tech is often used, but this comes at a very high operational costs due to server side execution. With WebVM you can have the security and reproducibility of virtualized environments with completely local execution.

Would love to see a version of Tails running in the browser!

Because everything should be in the browser now. The actual question would be "why would you want to run something out of the browser?"

So I can control it's deployment, updates and not be at mercy if the website shuts down.

This is obviously sarcastic, because I don't think there is anyone out there who still believes the old fantasy about browsers/JS becoming the "universal platform"?

Surely it already is a universal platform. Almost all major software runs on the web / electron.

Maybe to quickly try out new things?

Or to run software that you'd rather not install?

Having full blown Linux on my mobile phone would be great.

If only there was a mobile operating system based on the Linux kernel