ArcaOS, KolibriOS, AROS, FreeDOS, Plan 9, TempleOS, or even just an older version of Windows or Linux.
What’s your use case? How’s your experience?
is ReactOS really obscure? 😅
TempleOS is cool. You don’t need the Internet, it establishes a direct connection to the Seventh Heaven in the process.
I run the unstable HaikuOS build in a HyperV VM and keep updating it every week or two. Waiting on compatibility for hardware and just being able to use a web browser without issues. The epiphany port is decent but it’s still lacking. Things seem pretty active and really hope it’s more usable eventually. If done right, it could become the desktop OS alternative the world needs. Seems great design decisions were made early that should help it do well once the thousand paper cuts are reduced a bit.
HaikuOS is covered mostly by action retro in Youtube, it’s okayish… mostly I think tabbing and the UX design of Haiku is useful for me…
I even imitate it in XFCE Fedora Spin
What happens if you find someone like that? Temple OS has no Internet connection and is difficult to use. In fact, it is quite possible to use Haiku OS and even FreeDOS. You will just be using web versions of popular applications, that’s all. Even for DOS, there used to be a software package called Arachne browser. It is a static web browser, messenger, word processor and more.