Software defined radio receiver

 Gqrx works with hardware supported by gr-osmosdr, including Funcube
 Dongle, RTL-SDR, Airspy, HackRF, BladeRF, RFSpace, USRP and SoapySDR.
 .
 Gqrx can operate as an AM/FM/SSB receiver with audio output or as an
 FFT-only instrument. The built-in Gqrx AFSK1200 decoder can decode
 and display AX.25 packets. There are also various hooks for
 interacting with external applications using network sockets.
 .
 Wideband FM mode has mono, stereo, and RDS (Radio Data System) modes.
 Displays FFT plot and spectrum waterfall.
 .
 It is powered by GNU Radio and the Qt GUI toolkit.