Looking for non-Linux open-source options? From ghosts of past operating systems to fascinating works in progress, here are my top picks.

Most people take operating system size for granted — until the moment it matters. Maybe you have a decade-old machine collecting dust in a corner, and you're hoping you'll find an operating system ...

Now, the operating systems we will look at are far older than Windows 11/10, which is why we can run them in modern web browsers like Google Chrome, Microsoft Edge, etc. If you are running a Mac, then ...