Helio Workstation - Cross-platform lightweight speed-painting tool for creating music.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.
VST Buzz - Get exclusive deals on audio software.
MuseScore.org - Create, play back and print beautiful sheet music with free and easy to use music notation software MuseScore. For Windows, Mac and Linux.
KVR Marketplace - Marketplace for professional audio software.
Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.