Technically speaking, it has always been possible to run different flavors of Linux on top of Windows. None of those methods have been easy, much less official. Especially considering how the old guard at Redmond was almost viciously antagonistic towards the open source operating system. So when Microsoft announced its efforts to bring a slice of Linux to Windows 10 via the Windows Subsystem for Linux, it was almost like hell froze over yet again and something that probably wouldn’t last. Now it seems that WSL is serious and seriously here to stay, with heavyweights like Debian and Kali Linux joining other Linux distros available on the Windows Store.