Beatboxer is described as 'Simple, open-source, HTML5 drum machine' and is an app in the Audio & Music category. There are eight alternatives to Beatboxer for a variety of platforms, including Online / Web-based, Android, Android Tablet, iPad and Self-Hosted solutions. The best alternative is drumbit, which is free. Other great apps like Beatboxer are HTML5 Drum Machine (Free), HTML-909 (Free, Open Source), EGDR808 (Freemium) and HTML-808 (Free).
HTML-909 is a 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.
Dragon is a drum machine built to quickly and easily make glitch, distorted, lofi drum beats and manipulate them live. The drums are simple and flexible, capable of some classic drum machine sounds and also new weirdness.