FSKview
FSKview is a high-resolution spectrogram for viewing frequency-shift keyed (FSK) signals in real time.
Download
FSKview can be downloaded from the FSKview website
Build FSKview from Source
Developers interested in experimenting with this program can run it from its source code using Visual Studio Community (Free). Open the solution file in the src folder and press F5 to run the program.
Libraries Used by FSKview
Signal analysis is performed by the FftSharp and Spectrogram libraries and the sound card interface is provided by NAudio.