The BSDs are UNIX-like because being “UNIX” involves paying to go through a certification process, and I don’t believe any of them target strict compliance. Solaris is a UNIX, as is HP-UX, AIX, and Apple OSX.
The BSDs should all be pretty close, though.
I wasn’t aware of any for consumer level chips. All I really want is a basic motherboard+processor with ECC RAM and solid electronics with good capacitors and power filters like the manufacturers seem to be doing for the high end gaming rigs, but without a lot of bells and whistles that need to be turned off as part of the “new computer” process.
they had the technology the whole time to make upgraded modular chips and sell them for pre-existing computer architecture
I’ve heard that it’s also possible to make consumer motherboards with ECC RAM and no built-in wifi as well, but surely someone would’ve tried that by now if is was technologically possible.
Maybe the RISC-V RVA23 push will be able to figure it out.
If you try FreeBSD you get ZFS as the file system and PF (OpenBSD’s creation) as the firewall. Sound and video will be a little different to set up, but most applications are going to work the same these days.