Sonic Pi is your free code-based music creation and performance tool
Audio server, programming language, and IDE for sound synthesis
Swift audio synthesis, processing, & analysis platform
An advanced drum machine with pattern-based programming
Audio codecs extracted from Android Open Source Project
JACK Audio Connection Kit Qt GUI Interface
A fluidsynth Qt GUI Interface
Nyquist is a language for sound synthesis and music composition.
The deep learning toolkit for speech-to-text
Minimalistic Music Player
FFmpeg 4.0 + X264 + mp3lame + fdk-aac + opencore-amr + openssl
Command-line cloud music player for Linux
Low-latency, high quality voice chat for gamers
MIDI software to play tones from the "overtone series"
Real-time sound synthesis and processing framework
Real-time audio synthesis engine and music programming language
An iOS and macOS audio visualization framework
Text-based Music Programming Tools
Timbre Imitation and Adaptation for Experimental Music Instruments
Alarm Clock with a couple of nice extra features. Wake up your way.