I was surprised by the the lack of source as well. OpenWebRX[1] appears to be a competent alternative that is AGPL. I wonder if either of them support the HackR

I was surprised by the the lack of source as well. OpenWebRX[1] appears to be a competent alternative that is AGPL. I wonder if either of them support the HackRF One... [1]: https://sdr.hu/openwebrx https://sdr.hu/openwebrx