An anonymous reader wonders: "With the huge amount of operating systems available (numerous free and non-free Linux distros, Windows, Mac OSX, BSD, etc) who would buy SkyOS? An OS that was once free will now become a commercial operating system with the release of version 5.0. Although 'Porting applications from POSIX operating systems is an easy task', applications will still have to be ported since SkyOS 'isn't based on any other operating system'. This leads me to wonder...is there something about this operating system that I'm missing? Has anyone out there tried SkyOS and why would anyone pay for SkyOS with all of the alternatives out there with tonnes of software easily available?"