ChordNova is a powerful open-source chord progression analysis plus generation software with unprecedentedly detailed control over chord trait parameters, that is way above mainstream softwares. Runs on multiple OS (currently Windows and Linux). | 智弦（ChordNova）是清华大学沈智云和星海音乐学院陈文戈共同开发的一款免费开源、功能强大的和弦进行自动生成软件。该软件提供前所未有的特征参数细节控制，远超以三度叠置为基础的主流软件。

🎼 HTML5/WebAudio multi-track songwriting app with chord analysis support! -- https://hlorenzi.github.io/theorytracker/

🎸 A web app to visualize scales, chords and arpeggios on all kinds of fretboards.

A declarative toolbox to build interactive musical instruments on web and mobile.

Chord Naming App with MIDI Support

Elementary and clean Android PianoView for displaying piano chord/scale charts in music theory apps for pianists.

Awesome shit for Native Instruments Traktor++

A tool to experiment with music harmony, learn music theory and compose music.

Simple Circle of Fifths application showing chords in key, notes in chord, and suggested chord progressions for each key and mode.

A React app mimicking a hardware used back in the days, Step Sequencer for producing music beats with baked in audio samples and custom ones.

Source code for HAA-263831-19 Digital Humanities Advancement Grants (National Endowment for the Humanities)

C# music theory library and Unity app for everything from teaching absolute beginners, to the exploration of cutting edge musical analysis.

A companion app for songwriters. Uses your liked songs / chord progressions to improve or show substitutions to your own chord progressions.

🎵 Web application for ear training, music theory on the topic "Musical intervals".

Tonnetz app for music exploration using the web platform.

A web page that gives you random musical keys for practice purposes.

A collection of apps to help train your ear in interval and chord recognition.

Python Flask web application for learning fundamental music theory

🎚️ (WebApp) Twelve tone matrix visualizer for any given row of any given length.

Web based games/tools to learn music theory and piano