macOS System-wide audio equalizer & volume mixer
PC based Oscilloscope and Spectrum analyzer using sound card
Continuous display of audio spectrum from PC input or wave file
a python program to generate, visualize, and manipulate short sounds
System Audio Equalizer for macOS - Parametric EQ & Volume Mixer
Open source RTL-SDR Panoramic Spectrum Analyzer
DVAP Utility for band scanning, calibration, firmware update
Fast, bit-perfect audio editor that doesn't modify samples needlessly
Feel the music
AM/FA is basic media player with Frequency Analyzer
The real open-source RTL-SDR 2832 dongle panoramic spectrum analyzer
Music Player
Spectrum Analyzer Software
Electric Behaviour of Crystals and Pierce Crystal Oscillators