ArcaOS is an operating system based on the last IBM release for OS/2. While OS/2 barely survives as a legacy system, even after being extended for a while as eComStation, ArcaOS 5.1 is still being ...
If you thought Windows, macOS, and Linux were the only operating systems for general-purpose PCs, you might want to take a look at the sheer number of alternative OSes out there. The FreeBSD scene ...