An extensible media player for Android
Swift audio synthesis, processing, & analysis platform
The fre:ac audio converter project
Javascript audio library for the modern web
MIDI libraries for Qt/C++
Music player and music library manager for Linux, Windows, and macOS
A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 / 11
A high quality MP3 encoder
Audio codecs extracted from Android Open Source Project
A free multi-track audio editor and recorder
An advanced drum machine with pattern-based programming
Audio Tag Editor
Virtual MIDI controller for Linux, Windows and OSX
Icecast and Shoutcast broadcasting client
Graphical editor software for many Boss and Roland effect & synth unit
An Audio/MIDI multi-track sequencer
wxMP3gain is a free front-end for the MP3gain.
Free media player with support for Youtube
Virtual Pipe Organ Software
EasyABC is an open source ABC editor