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Audio Separator vs StemRoller: catalog facts
Audio SeparatorStemRoller
Free

Free and open source.

Free

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

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

Checked September 26, 2026

Checked October 2, 2026

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