Some years ago my father shown me a pretty awesome piece of software created by Pieter-Tjerk de Boer. And I was absolutely surprised about this. Pieter built WebSDR, a software defined radio receiver thru Internet with the great gift of many simultaneous users listening to different frequencies.
Recently, Pieter added Raspberry PI support to his software, so it was a great moment to get hands dirty on this project: A fully automated Raspberry PI 3 powered WebSDR receiver. I had a spare Raspberry PI3, and also a RTL-SDR RTL2838u usb dongle ready to be used.
I asked Pieter for a copy of WebSDR, and he answered my email with an attached compressed file with webSDR binaries and files.