Software that decodes the following digital transmission modes: POCSAG512, POCSAG1200, POCSAG2400, FLEX, EAS, UFSK1200, CLIPFSK, AFSK1200, AFSK2400, AFSK2400_2, AFSK2400_3, HAPN4800, FSK9600, DTMF, ZVEI1, ZVEI2, ZVEI3, DZVEI, PZVEI, EEA, EIA, CCIR, Morse code (CW), X10.
Give it a recording or stream of raw audio and it can try to make sense of it. This includes the output of utilities like rtl_fm.