Life & fun · alternatives · 2026

24 alternatives to HTML-909 Rhythm Composer

An HTML version of a Roland TR-909

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. HTML-909 Rhythm Composer launched in 2015; newer entries below may have overtaken it.

1. 1IB
   I built a website for sharing drum patterns▲495

   Originally started as a project to restore patterns from now defunct website 808.pixll.de just for myself, but eventually i decided to share it with others. I've seen this website mentioned a couple of times on HN:) Currently it only supports Roland TR-808, but there will be more.

   2025 · drumpatterns.onether.com · its alternatives →

2. 2T1
   TR-101 – A drum synth/sequencer made with Vue and the web audio API▲105

   2017 · inverted3.gitlab.io · its alternatives →

3. 3
   Super Looper▲133

   Make music in your browser

   2014 · its alternatives →

4. 4
   Type Drummer▲166

   Drum by typing

   2015 · typedrummer.com · its alternatives →

5. 5AT
   A techno machine in one HTML file, with verifiable renders▲240

   Aug 2026 · ssx360.github.io · its alternatives →

6. 6
   Roland 808303.studio▲89

   TR-808 drum machine and TB-303 bass synthesizer emulator

   2020 · roland50.studio · its alternatives →

7. 7
   Sndtst▲124

   8-bit video game music

   2014 · sndtst.com · its alternatives →

8. 8
   HTML5 Piano - with its own data URI synth▲64

   A synth piano synth that generates all of its audio files dynamically using JavaScript and data URIs. Choose from a variety of sounds styles and play with the looper, visual waveforms, and more.

   2012 · mrcoles.com · its alternatives →

9. 9AS
   A singing synthesizer for the browser with automatic 3-part harmony▲208

   2024 · pbat.ch · its alternatives →

10. 10
    Beats, a web-based drum machinefree▲160

    Hello all! I've been an avid fan of Pocket Operators by Teenage Engineering since I found out about them. I even own an EP-133 K.O. II today, which I love. A couple of months ago, Reddit user andiam03 shared a Google Sheet with some drum patterns [1]. I thought it was a very cool way to share and understand beats. During the weekend I coded a basic version of this app I am sharing today. I iterated over it in my free time, and yesterday I felt like I had a pretty good version to share with y'all. It's not meant to be a sequencer but rather a way to experiment with beats and basic sounds,…

    Jan 2026 · beats.lasagna.pizza · its alternatives →

11. 11MY
    Make your web page dance with Rythm.js▲183

    2017 · okazari.github.io · its alternatives →

12. 12
    io808▲122

    The classic drum machine synthesizer brought to the web.

    2016 · io808.com · its alternatives →

13. 13
    KRFT 1.5.0▲110

    A modular instrument for music production

    2017 · studioamplify.com · its alternatives →

14. 14
    Stage▲101

    Content management system for dynamic band websites

    2015 · its alternatives →

15. 15
    PulseBoy▲77

    Web-based musical sequencer which only uses 8bit sounds

    2015 · pulseboy.com · its alternatives →

16. 16
    The first websynth that's 100% mappable to a MIDI controller▲122

    Emulation of the Roland Juno-106 analog synth. Contribute to stevengoldberg/juno106 development by creating an account on GitHub.

    2015 · github.com · its alternatives →

17. 17
    Tab Lab▲76

    Read and write music notation and tablature, together.

    2015 · my.tablab.io · its alternatives →

18. 18
    Musikcube▲107

    A fully functional terminal-based music player

    2017 · musikcube.com · its alternatives →

19. 19
    A Simple Online Step Sequencer▲60

    Make simple 4-bar music loops in your browser using this simple online sequencer. A quick way to express your musical ideas and export them as MIDI.

    2022 · muted.io · its alternatives →

20. 20
    Melodics▲93

    GuitarHero/RockSmith for pad drumming

    2015 · melodics.com · its alternatives →

21. 21
    Typedrummer▲14

    An instrument for creating drum beats with text

    2015 · typedrummer.com · its alternatives →

22. 22
    Music Player for Reddit▲95

    Play music from subreddits

    2015 · musicplayer.io · its alternatives →

23. 23
    Note Tracks▲80

    Annotated notes for audio content

    2015 · notetracks.com · its alternatives →

24. 24
    Mindscapes▲90

    Stochastic background music generator

    2014 · mindscapes.co · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →