I think it's interesting that the Haiku project has now re-created BeOS
as an open-source project. I've seen people posting about Haiku being more and more mature now, and I've seen some people say they're using it for their daily OS now.

I'm desperate for this, but it's not my daily driver. It's not ready on my laptops for even this. PuTTY doesn't work well. Becomes strangely unresponsive.

... Nothing worthwhile ever arrives by mail.