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fre:acopus-tools
Free

Free to use; the project accepts donations.

 Free

Free and open source.

Windows, macOS, Linux Windows, Command line
  • Wide range of input and output formats
  • Converts whole libraries and keeps folder structure
  • Encode, inspect and decode Opus in one toolset
  • Easy to script for batch conversion
  • Releases are infrequent
  • Interface is functional rather than modern
  • Command-line only, with no graphical interface
  • Handles Opus files only
Downloadable app Downloadable app
Open source Open source
License not stated License: BSD-2-Clause AND GPL-2.0-only
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked October 2, 2026

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