Demo: https://sshwifty.herokuapp.com/#+Telnet:towel.blinkenlights.... (Telnet though)
Please notice: The Telnet part is not fully working. I'm still figuring it out.
Please be alerted: SSH login detail including password and private key is transmitted to the back-end server. If you want to actually use it, it is recommended to deploy it on your own machine/server instead of use the public ones.