ngrok is a tool that makes it easier to develop networked services (HTTP/TCP) It is a man-in-the-middle proxy server that you run locally on your development box. It allows you to do the following things:

• Inspect all http requests/responses sent to/from the proxied application
• Replay any previously observed http request to the proxied application
• Expose a local http server to the internet on a subdomain of ngrok.com
• Expose a local tcp server to the internet on a random port on ngrok.com

ngrok has no runtime dependencies. Just download a single binary for your platform and run it.

• Linux
• Mac OSX
• Windows

Binaries get placed in ./bin

git clone git@github.com:inconshreveable/ngrok.git
cd ngrok && make
bin/ngrok [LOCAL PORT]