ReactOS may not be great to use, but it represents some of the most impressive work done by the open-source community.

ReactOS is a free and open source operating system designed to be compatible with Windows software and drivers. While it’s been under active development since 1999, the operating system is still ...

There have been several attempts to make an unencumbered version of Windows. ReactOS is perhaps the best-known. You could also argue that Wine and its progeny, while not operating systems in the ...

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