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

Microsoft finally open sources DOS 1.0 - and it's so much more than the code ...

TechRepublic covers the full range of open source software with reviews, tutorials, and advice for how to get it and integrate it into your environment.

Linux turns 35 years this year, and the operating system remains the backbone of most supercomputers. Here's why the world's ...