What are some alternatives?
When comparing beame-insta-ssl and Portmap.io, you can also consider the following products
ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
Pagekite - Bring your localhost servers on-line.
Serveo - Use SSH to expose local servers over the internet and inspect and replay HTTP traffic.
sish - An open source serveo/ngrok alternative. HTTP(S)/WS(S)/TCP Tunnels to localhost using only SSH.
Packetriot - Expose services on local and private networks to the Internet.
Forward - The easiest way to share localhost over the web.