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Ooloi is a cutting-edge, open-source music notation software designed to simplify the creation, formatting, and printing of complex musical scores.

​Inspired by the pioneering Igor Engraver and created by the author of that project, Peter Bengtson, Ooloi combines modern technologies like Clojure, JavaFX, and Skia to deliver high-quality rendering and seamless performance across Windows, MacOS, and Linux.

With an intuitive interface and modular architecture, users can easily customize their experience with plugins which can be open-source or closed-source, paid or free.

​We invite you to join our community-driven project, licensed under the Mozilla Public License (MPL) 2.0, and help us shape the future of music notation. The platform for Ooloi is currently being prepared for open-source release.
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Ooloi is a modern, open-source desktop music notation software designed to produce professional-quality engraved scores, with responsive performance even for the largest, most complex scores. The core functionality includes inputting music notation, formatting scores and their parts, and printing them. Additional features can be added as plugins, allowing for a modular and customizable user experience.

​Ooloi is currently under development. No release date has been announced.​


  • Home
  • Overview
    • Background and History
    • Project Goals
    • Introduction for Musicians
    • Introduction for Programmers
    • Introduction for Anti-Capitalists
    • Technical Comparison
  • Documentation
  • About
  • Contact
  • Home
  • Overview
    • Background and History
    • Project Goals
    • Introduction for Musicians
    • Introduction for Programmers
    • Introduction for Anti-Capitalists
    • Technical Comparison
  • Documentation
  • About
  • Contact