Avid Sibelius is described as 'Professional music notation software for Windows and macOS with intuitive tools for score creation, MIDI input, guitar tab conversion, and dynamic parts' and is a music production app in the audio & music category. There are more than 50 alternatives to Avid Sibelius for a variety of platforms, including Windows, Mac, Linux, iPad and iPhone apps. The best Avid Sibelius alternative is MuseScore Studio, which is both free and Open Source. Other great apps like Avid Sibelius are Guitar Pro, Dorico, LilyPond and Rosegarden.
it anticipates what musicians needs to make music and provides it. it's incredibly easy to use. Produces professional results and it keeps getting better every year. this is understandable when you consider that musicians created the programs