macOS System-wide audio equalizer & volume mixer
Mixxx is Free DJ software that gives you everything you need
PC based Oscilloscope and Spectrum analyzer using sound card
Midiexplorer is designed to explore a large collection of midi files
audio sequencer
Ballroom Music Player
A music tracker software for Windows.
Metronome
Analyze audio files for Peak levels, peak and total RMS, and DC offset
Simple visual and acoustic metronome with bar-based song part tracking
Fast, bit-perfect audio editor that doesn't modify samples needlessly
Your Hardcore Loop Machine for Windows, Linux and OS X.
Feel the music
AM/FA is basic media player with Frequency Analyzer
A tool to look into file contents
Loop based software with jack transport, record and midi controllable
Metronome for Csound to improve your timing skills
Thérémine generates high quality audio from an USB Arduino Theremin
Tapita is a BPM detector.
VST instrument playing mp3 files
The real open-source RTL-SDR 2832 dongle panoramic spectrum analyzer
Music Player