Download the beta at https://externos.io Beta 1 is currently available as a preview, almost like a prroof of concept stage and lacks a lot of functionality. Beta 2 coming soon (estimated end of April).
Due to many new people, I would like to address a few things: Firstly, this was a personal project of mine. I decided to make it public incase some people liked the idea (as suggested by a friend after using it). As a result the first beta isn't that feature rich by any metric, but it is essentially a release to see if people like the idea before I put more effort into it. It is based on Linux but Apps run using Nw.Js.
This first beta will run live on your computer (from ram) does not touch your hdd (unless you access your hdd inside the OS). You cannot install this first beta because it was a test release, so people can experience the idea and it is no where near stable enough to be something I would want people to permanently install. And no, you should NOT run it in a virtual machine, it needs to run on physical hardware for now (do not ignore this warning, there has been several people ignoring this even though I have stated it everywhere).