Start with the person that is instrumental in this - Mitchell Hashimoto - you probably use products built on top of or with his tooling somewhere in your daily life already without knowing it. https://mitchellh.com/
I suspect you're getting down voted on this as it feels like this is a failure to educate yourself on something that feels like it should be relatively easy to do so in less time than it took to type your message.
I do have my own opinion, and I did that research on my own when picking Tailscale, Shellfish etc. and I am using these tools now daily. However I took the main post for an opportunity to ask this question since people were already engaging with something similar.
People are assuming the wrong thing I guess. We should always assume for the positive intent.
I suspect you're getting down voted on this as it feels like this is a failure to educate yourself on something that feels like it should be relatively easy to do so in less time than it took to type your message.