There's a free software self-hostable server called "Headscale" somewhere on Github (not that I've used it). I saw a comment somewhere that Tailscale approved

There's a free software self-hostable server called "Headscale" somewhere on Github (not that I've used it). I saw a comment somewhere that Tailscale approved of it. I wonder whether a smaller company of experts(?) whose business is focussed on this is any more vulnerable than an established one with huge resources.