Speaking as an ngrok user, their documentation is terrible and has caused me to waste huge amounts of time trying to figure out how to do things or whether it can do things. Take documentation seriously (and no, "it's open source" doesn't count as documentation for a product you ask people to pay for).

Can tunnelto open multiple ports on the same sub domain? Does the documentation explain clearly how to do this or that it's not supported if it isn't?

Do you support https tunneling (for example https to the subdomain followed by either http or https to the local machine)? Do your docs explain how to do this and if you don't support it do the docs say so?

I'd love a competitor to ngrok, but it has to actually be better at the places where ngrok is weak (which have very little to do with implementation or functionality)