I'm not sure what you focus on their interface work? I'm pretty sure you could have a BeOS-like interface on Linux with very little work, Haiku's main work is r

I'm not sure what you focus on their interface work? I'm pretty sure you could have a BeOS-like interface on Linux with very little work, Haiku's main work is reproducing BeOS APIs and making work the new kernel. The second part is really unfortunate IMHO, but hackers gonna hack..