TunnelPad

TCP ports

On Pro and Team you can share any TCP service, not just websites: a database, Redis, an SMTP server or a game server.

tunnelpad share-port 5432
  Sharing     127.0.0.1:5432 (TCP)
  Connect to  relay-lon-1.tunnelpad.dev:24817

Anyone can connect to that address and port while the command runs, so make sure the service has a password. The port number is random each time.

To share a port on another machine, give its address: tunnelpad share-port 192.168.1.20:3306.