Jniz

Intervals panel (melodic and harmonic)
Show successive perfect fifths / octaves / unisons, crossing voices errors
Direct fifth / octave / unison errors
false relation (including tritone), seventh to tonic and doubling
Dissonances preparation and resolution
Non harmonic tones analysis and recognition (must be approved by the end-user)
Chords analysis and visualization, inversions, roman notation
A solver which returns combinations according to the predefined rules (module not free of charge)
Intervals & errors panels dynamically updated
Accidents, tie and dot
Complete scale -/+
Keys and modulations
Extended redo / undo
Pdf / Lilypond / MusicXml / Midi export
And many bugs fixed!