OpenPiano turns a Windows computer into a playable piano. Follow the labeled computer keys, click or glide across the onscreen piano, or connect a MIDI controller for a more traditional playing experience.

Choose a 61 or 88 key layout, explore the included sounds, or add compatible SF2 and SF3 instrument files. Key mappings, colors, themes, touch, sustain, pitch, and other controls can be personalized without leaving the application.

When a performance is worth keeping, save it as editable MIDI or ready to play WAV audio. OpenPiano runs locally and does not require an account or track how you play.

Website: https://www.justagwas.com/projects/openpiano
Documentation: https://github.com/Justagwas/OpenPiano/wiki
Source code: https://github.com/Justagwas/OpenPiano

Features

  • 61 and 88 key piano layouts
  • Computer keyboard, mouse, and MIDI controller input
  • Included instrument sounds
  • Support for compatible SF2 and SF3 sound files
  • Custom key mappings
  • Volume, touch, sustain, and pitch controls
  • Themes and individual piano key colors
  • Built in interactive tutorial
  • Recording to editable MIDI or WAV audio
  • Local operation without an account

Project Samples

Project Activity

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Categories

Sound/Audio, MIDI

License

GNU General Public License version 3.0 (GPLv3)

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User Reviews

  • Very good app! My huge thanks to the developers 👍
    1 user found this review helpful.
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Additional Project Details

Operating Systems

Windows

Languages

English

Intended Audience

End Users/Desktop

User Interface

Project is a user interface (UI) system

Programming Language

Python

Related Categories

Python Sound Audio, Python MIDI Software

Registered

2026-02-10