MuseScore is a free music notation and composition software available for Linux, Windows and Mac. .
Sibelius is a scorewriter program, created by Sibelius Software (now part of Avid Technology) for Microsoft Windows, OS X, and historically RISC OS.
Dorico redefines the gold standard in scoring software. Its musical intelligence is like having an expert assistant by your side, while its intuitive workflows help you focus on each aspect of score preparation.
Finale is proprietary scorewriting software developed by MakeMusic, Inc.