Vernier Spectral Analysis
Vernier Software & Technology
Spectroid
Carl Reinke
Epson Spectrometer
Seiko Epson Corporation
Dominant λ Light Spectrometer
Contechity
Spectrometry
PASCO scientific
Advanced Spectrum Analyzer PRO
Wojciech Czaplejewicz
Scoppy - Oscilloscope
FHDM TECH
Room Acoustics Meter
Dr. Johann Gaus
Speccy Spectrum Analyzer
Liam ODonnell
Color Meter - RGB HSL CMYK RYB