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StemRollerAudio Separator
Free

Free, released under your choice of the Unlicense or MIT No Attribution.

 Free

Free and open source.

Windows, macOS Command line
  • One-click stem separation using Demucs
  • Built-in YouTube search to find songs
  • Uses many pre-trained UVR separation models
  • Works from the command line or as a Python library
  • Linux is not officially supported
  • Splitting a song takes several minutes
  • No graphical interface
  • Needs a Python environment and model downloads
Downloadable app Downloadable app
Open source Open source
License: Unlicense OR MIT-0 License: MIT
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.