SNARE is a flexible, cross-platform and modular Analyze Tool realized in the programming language Python.
In general the program has options for recording or analyzing existing WAV files. There are already implement analyze types: Fast Fourier Transform plot (with 3th, 6th, 12th and 24th octave bar), Sound Pressure Level plot, Histogram (probability of pressures with cumulative sum). The good thing: It’s completly easy to write your own analyse widget!

Download (Windows and macOS) and Documentation:
https://git.io/snare