Spectroid
Carl Reinke
Spectrometry
PASCO scientific
Vernier Spectral Analysis
Vernier Software & Technology
Lux Light Meter Photometer PRO
Przemek Pardel
Spectrum Analyzer
Raspberrywood
Audizr - Spectrum Analyzer
Pragmatheorist
phyphox
RWTH Aachen University
Speccy Spectrum Analyzer
Liam ODonnell
Light Analyzer (need Diffracti
Open Source Physics Singapore
Spektrum - Sound Analyzer
Leonid Arefev