tonica fugata is described as 'Composing it for you... Automatic three and four-part composition (styles: J.S. Bach, Max Reger, Jazz, Pop plus creating your own styles), automatic harmonizing, automatic fugue and canon composition' and is an app in the Audio & Music category. There are more than 25 alternatives to tonica fugata for a variety of platforms, including Windows, Mac, Linux, iPhone and iPad. The best alternative is MuseScore, which is both free and Open Source. Other great apps like tonica fugata are Rosegarden (Free, Open Source), LilyPond (Free, Open Source), Avid Sibelius (Freemium) and StaffPad (Paid).
GNU LilyPond is a computer program for music engraving. One of LilyPonds major goals is to produce scores that are engraved with traditional layout rules, reflecting the era when scores were engraved by hand.
Flat lets you write sheet music with your friends in real time with a nice music notation editor. Create and edit your music score documents directly with your web browser in realtime with your friends or colleagues.
Finale is proprietary scorewriting software developed by MakeMusic, Inc. It displays music primarily in music notation and allows for multiple tracks and very specific tweaking of instrument sounds for each track.