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

Not sure which desktop operating system is best for you? We help you choose by comparing the top options based on app compatibility, ease of use, hardware availability, interface design, gaming ...

Linux turns 35 years this year, and the operating system remains the backbone of most supercomputers. Here's why the world's fastest machines don't use Windows.