tunnl.gg

Most tunnels hand you a new URL every time. tunnl.gg gives you the same one: connect as stable@proxy.tunnl.gg and your SSH key becomes your identity, so your public HTTPS URL never changes. Register a webhook or OAuth callback once and forget it. Nothing to install, no account, works on any machine with SSH, with a QR code and live request log in your terminal. Free to use. Pro adds your own subdomains, no time limits and a request inspector. Open-source (MIT) server.