MusicDisruption is described as 'online music creation and sharing platform for digital music with hundreds of virtual instruments, filters and effects, all with real-time collaboration' and is a Music Production App in the Audio & Music category. There are more than 10 alternatives to MusicDisruption, not only websites but also apps for a variety of platforms, including Windows, Mac, iPad and iPhone. The best alternative is MuseScore, which is both free and Open Source. Other great sites and apps similar to MusicDisruption are Guitar Pro (Paid), Avid Sibelius (Freemium), LilyPond (Free, Open Source) and Flat (Freemium).
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.
alphaTab is a cross platform music notation and guitar tablature rendering library. You can use alphaTab within your own website or application to load music sheets from files like Guitar Pro or use the built in markup named alphaTex.
Noteflight is an amazing online notation editor. On the free version you get 10+ instruments to choose from, lots of musical symbols and more. On the payed version (Cresendo) you get lots more instruments, guitar tab and sharing options. Best way to wite music on the web.
Bring musical inspirations to life with the blazingly fast and intuitive Notion™ 6 music composition and performance environment. Compose when and how you want and even enter music with your own handwriting.