HTML-909 is described as 'Very accurate simulation of the classic Roland TR-909 drum machine, created with HTML5 and accessible using any modern browser. Formerly available through its own domain, the app is now available through a GitHub repository, though audio samples are not included' and is an website in the audio & music category. There are more than 10 alternatives to HTML-909, not only websites but also apps for a variety of platforms, including Windows, Linux, Android and iPhone apps. The best HTML-909 alternative is Hydrogen, which is both free and Open Source. Other great sites and apps similar to HTML-909 are iO-808, HammerHead, drumbit and Rhythm Studio.