tlecomte / friture

Real-time audio visualizations (spectrum, spectrogram, etc.)

hvianna / audioMotion.js

Media player and real-time audio spectrum analyzer written in JavaScript.

adswill / OnAir

Free SDR receiver for macOS, Windows and Linux: digital TV (DVB-T/T2, DVB-C, DVB-S/S2, ATSC, ISDB-T, DTMB), DAB+, FM, DRM, aviation (ADS-B, ACARS, VDL2), satellites, GNSS, ham modes (FT8, PSK31, CW), digital voice, cell towers and a spectrum analyser. HackRF, RTL-SDR, Airspy, SDRplay, BladeRF, LimeSDR, Pluto, USRP.

z2labs / sdrpp-esp-sdr-source

Native SDR++ source module for ESP-SDR on the ESP32-S3: real IQ over USB, no bridge needed