Ramsophone - A generative art/music machine. (Be sure to refresh!)

Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.

Generative Art in Go - Learn the basics of algorithmic art with the Go language

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.

Playform - Harness the power of artificial intelligence to expand your imagination and productivity, without learning how to code.

Finale - Finale, the world standard for music notation software, lets you compose, arrange, notate, and print engraver-quality sheet music.