Found the answer, in the headscale readme: > Everything in Tailscale is Open Source, except the GUI clients for proprietary OS (Windows and macOS/iOS), and the

Found the answer, in the headscale readme: > Everything in Tailscale is Open Source, except the GUI clients for proprietary OS (Windows and macOS/iOS), and the 'coordination/control server'. Keeping the GUI clients for proprietary operating systems closed-source is certainly a valid business decision. It's just unfortunate that it means we don't get to fix any issues we find that may matter more to us than they currently do to the Tailscale team, e.g. accessibility. Edit: Yes, I know, to be fully consistent on this point, I should run an open-source OS. But then, the proprietary operating systems have accessibility teams, while presumably Tailscale does not.