We have live sites for running client sites, we have staging sites for testing. But what about localhost sites. We sometimes have some test code running in local that we want the world to see!
NGROK is a tiny program that let's you temporarily create an url for your localhost! And anybody with the URL can visit this and enjoy the goodness within!
Moreover it does not need install, runs on Windows, Linux, Mac, BSD or ARM, plus its open source. How cool can it get?!