Here’s a great interview by Bryan Lunduke with Haiku developer Augustin Cavalier.

The Lunduke Hour had me on as a guest to talk about Haiku

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My Haiku installation on a Dell Optiplex GX620.

What is Haiku?  Well, watch the video in the link!  Or, if you want to read more about it, check out the following links.

https://www.haiku-os.org/
https://en.wikipedia.org/wiki/Haiku_(operating_system)
https://en.wikipedia.org/wiki/BeOS