Somewhat related - I am working on a dual Pentium III retro build (first retro build) and completely forgot that this would be 32-bit and won't have niceties like SSE2. Having some fun going down the rabbit hole of IDE, SCSI interfaces and AGP graphics. Can anyone recommend some OS installations to play with? So far I am thinking Haiku, ReactOS, NetBSD and antiX or MX Linux. At some point I am also going to simulate a Novell Netware deployment.
Good list, maybe SerenityOS too?