Helio Sequencer

github.com/helio-fm/helio-sequencer Hobbies & DIY Open-source projectOpen source

Use Helio Sequencer to create music on desktop or mobile; the project describes it as a free sequencer.

github.com/helio-fm/helio-sequencer
Helio Sequencer homepage screenshot

About Helio Sequencer

Helio Sequencer is a free and open-source music sequencer for desktop and mobile platforms. Its stated goal is a clean, distraction-free interface that favors clarity over complexity. The project also encourages experimentation with less common areas of music, including exotic scales and microtonal temperaments.

The repository describes built-in metronome sounds, a built-in SoundFont player instrument, and a built-in scripting language based on Lisp. The latest builds are offered at helio.fm. The source is licensed under GNU GPL v3.

Key features

  • Built-in SoundFont player instrument
  • Built-in scripting language based on a Lisp interpreter
  • Built-in metronome sounds
  • Design aimed at experimenting with exotic scales and microtonal temperaments
  • Uncluttered, distraction-free user interface
  • Repository topics list MIDI and VST support
Best for: Musicians and hobbyists who want a free, open-source sequencer and are interested in composing with unusual scales or microtonal tuning.
Good for
  • Free and open-source under the GNU GPL v3 license
  • Stated focus on a clean, uncluttered interface
  • Translations are listed for multiple languages, contributed by community members

Helio Sequencer at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Helio Sequencer FAQ

Where can I download the latest builds of Helio Sequencer?
The project states that the latest builds can be found at helio.fm.
Is the source code available?
Yes. The project is open source, the repository is hosted on GitHub, and it is licensed under GNU GPL v3.
Does Helio Sequencer support microtonal music?
The project states that it encourages experimentation with exotic scales and microtonal temperaments.
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