Aria Maestosa has been discontinued. Similar apps include MuseScore Studio, which is free and open source. Other options are TuxGuitar, Guitar Pro, LilyPond and Rosegarden. There's no shortage of Music Production Apps like Aria Maestosa, with more than 25 alternatives for Windows, Mac, Linux, iPhone and iPad.
Canorus is a free cross-platform music score editor. It supports an unlimited number and length of staffs, polyphony, a MIDI playback of notes, chord markings, lyrics, import/export filters to formats like MIDI, MusicXML, ABC Music, MusiXTeX and LilyPond.
Harmony Assistant is an unbeatable software for computer-assisted music composition and editing.
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iOS and macOS notation and tablature editor with MIDI and MusicXML files support and chromatic scales analyze of the score.
ABC, a text based music score manager-editor for free. You can copy, transpose or play these songs, import midi-music files, export to midi, to pdf, to web page or to any other printable format.
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Learn to play any instrument! Instrument Bible is a virtual fingering chart for brass, woodwind, and string instruments.
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Graphical Notation is an app for music creation and graphical notation using Artificial Intelligence.
TablEdit is a program for creating, editing, printing and listening to tablature and sheet music (standard notation) for guitar and other fretted, stringed instruments, including mandolin and bass.
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MEFA is a program that can be used for writing, printing and playing music. The MEFA program is very easy to use and the music can be written in a fast way. The notation is presented above the text window.
ABCEditor is a Windows program from Elizabeth Scarlett (hosted at Alf Warnock's site) which allows you to create, edit, play and organise abc files. It can transpose, reformat, adjust beaming, create cheet sheets and search for tunes.
The main feature of music notation software should be the facility to produce high quality sheet music the easy way; enter music notes as simple as possible, using either PC-keys, mouse, or a MIDI-keyboard.
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MidiYodi is a cross-platform MIDI Editor for the desktop that allows editing, examination, playback and conversion of MIDI files. MidiYodi provides a rich set of tools to examine and edit the layout, structure and content of a MIDI file.
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