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 ...

What are open-source operating systems? Underpinning an operating system, for example Windows on your PC or Android on your phone, is many, many lines of code. Allowing anyone to inspect the source ...