[split] Windows vs Linux split (CodeIgniter 4.0.0-beta.2 Released)

Good question, and not one easily answered because we don't track the installs. And you can't forget OSX!

My best guess is that a majority of CI developers develop on Windows or Mac, but that a vast majority of CI apps are deployed in Linux systems. Many will test on Linux, or they should - even if only using the Windows subsystem for Linux.