daw : digital audio workstation, instrument and effect plugins, wave editor, Stargate is a holistic audio production solution, everything you need to make music on a computer.

tonal is a music theory library. Contains functions to manipulate tonal elements of music (note, intervals, chords, scales, modes, keys). It deals with abstractions (not actual music or sound).

tonal is implemented in Typescript and published as a collection of Javascript npm packages.

It uses a functional programing style: all functions are pure, there is no data mutation, and entities are represented by data structures instead of objects.

Helio Workstation is free and open-source music sequencer, designed to be used on all major platforms.