SigDigger

SigDigger is a digital signal analyzer that operates on GNU/Linux, macOS, and Windows. It uses its own DSP library, sigutils, and a real-time signal analysis library, Suscan, to distribute load across multicore CPUs. It supports most SDR devices due to SoapySDR and is licensed under the General Public License version 3. The interface is modeled after Gqrx, deemed to have the best user interface.

Current features include support for GNU/Linux, macOS, and Windows, OpenGL-enhanced spectrum and waterfall, real-time and replay analysis modes, analog mono audio playback, baseband recording, dynamic spectrum browsing, signal inspection, SNR calculation, symbol recording and visualization, Doppler analysis, transition analysis, interactive panoramic spectrum view, waveform inspection window, signal source decimation, bandplan information, audio channel recorder, blind parameter estimation, network broadcast of demodulated channel data, spectrum integrator, fast symbol autocorrelation analysis, analog TV demodulation, and subcarrier inspection.

Future features include automatic calculation of scrambling polynomials, symbol stream codecs, symbol tagging, automatic convolutional code detection, Viterbi decoding, OFDM inspector, DSSS inspector, internationalization, Turbocode / LDPC code support, built-in decoder / demodulator tabs, and Python integration.