music composition and notation software

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Jniz is a free software designed for musicians as a support tool to the musical composition.
It allows you to build and to harmonize several voices according to the rules of classical harmony.

JNIZ Web Site


  • interface of musical notation which allows you to create, edit, save a score
  • number of voices up to 16 (256 with layers).
  • possibility to change of Key at any time.
  • MusicXml, LillyPond, Midi, PDF export.
  • listen to the available Midi ports.
  • scale
  • redo / undo
  • harmonic correction of your work following the set of predefined rules
  • to give one or several solutions in case of fault if one or more rules are circumvented (Solver module).
  • Input with Midi keyboards
  • Windows, Linux, OS X compatible (32/64 bits)
  • The new 2.0 version is coming soon (new edition features, Solver faster, empty staves filled by Solver module, Keys / modulations suggestions, additional rules, pedals etc.). Some elements of counterpoints and imitations will be included in the version 3.

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English, French, Italian

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Java Swing

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