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Life & fun · alternatives · 2026

IB

I Built a Synthesizer with WASM is a web-based music synthesizer created using WebAssembly technology. It allows users to generate and manipulate audio directly in their browser without installing software. The project… 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. I Built a Synthesizer with WASM launched in 2020; newer entries below may have overtaken it.

  1. 1

    Hardware and software projects by Ali Roberts

    Nov 2025 · bitsnpieces.dev · its alternatives →

  2. 2
    io808▲122

    The classic drum machine synthesizer brought to the web.

    2016 · io808.com · its alternatives →

  3. 3AS
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    I've open sourced a JavaScript to WASM compiler. It's an experimental tool, but given the semantics I already implemented, I'm fairly certain I am able to eventually cover 100% of JavaScript spec. Any ideas, questions or critique welcomed! If you are interested in WASM, especially with new proposals like WASM GC or exception handling, it might be a good source of seeing these features in action - the project has a few thousand lines of hand written WAT so far.

    2024 · github.com · its alternatives →

  5. 5

    Create acid techno, in your browser with Acid Machine 2.

    2016 · errozero.co.uk · its alternatives →

  6. 6

    A powerful realtime node-based audio synthesizer. Contribute to monadgroup/axiom development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  7. 7

    Draw.Audio is a free online music maker. Draw notes on a grid and hear them play back instantly — a browser-based synthesizer, sequencer, and visual instrument.

    2024 · draw.audio · its alternatives →

  8. 8

    The collaborative video editor that breaks the boundaries of creativity, enabling you to craft infinite possibilities with your team.

    2020 · modfy.video · its alternatives →

  9. 9
    I built a synthesizer based on 3D physicsfree tier, from $99/mo▲512

    I've been working on the Anukari 3D Physics Synthesizer for a little over two years now. It's one of the earliest virtual instruments to rely on the GPU for audio processing, which has been incredibly challenging and fun. In the end, predictably, the GUI for manipulating the 3D system actually ended up being a lot more work than the physics simulation. So far I am only selling it direct on my website, which seems to be working well. I hope to turn it into a sustainable business, and ideally I'd have enough revenue to hire folks to help with it. So far it's been 99% a solo project, with…

    2025 · anukari.com · its alternatives →

  10. 10IM

    2022 · signalsandsorcery.org · its alternatives →

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    As a personal project I wrote a really tiny Wat 2 Wasm compiler in Go. Mainly for demonstrative and educational purposes. It was tough: I didn't know anything about WebAssembly internals and I'm a newbie with Go... so I tried to document it as much as I could for anyone that would like to approach the quest in the future! It misses a lot of features (that will be gradually implemented). Any feedback is welcomed!! Demo: https://luna-demo.vercel.app

    2022 · github.com · its alternatives →

  12. 12WC
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    repo of my sizecoding entries. Contribute to ilmenit/sizecoding development by creating an account on GitHub.

    2024 · github.com · its alternatives →

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    Online drum machine and sequencer with Roland 808 style samples

    2023 · peel.fm · its alternatives →

  15. 15WW
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    Tones is a simple, open, collaborative music-making platform. All tones are created using the built-in synthesizer.

    2018 · tones.fm · its alternatives →

  17. 17

    If you already know what bytebeat is, you don't need an explanation. If not, check my project :) Here is how it looks: SELECT mono(output( arraySum(x -> 1 / 6 * running_envelope(30 * (1 + x / 6), time, 0.05 * x, 0.005, lfo(0, 0.25, sine_wave, time / 8), 0.1) * sine_wave(time * 80 * exp2(x / 3)), range(12)))) FROM table; To check how it sounds, find the examples in the repository https://github.com/ClickHouse/NoiSQL

    2023 · github.com · its alternatives →

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    In the [first article in this series](<https://wasmer.io/posts/wasm-as-universal-binary-format-part-1-native-executables>) we demonstrated how you can c...

    2022 · wasmer.io · its alternatives →

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    a very (x 10) basic wasm console. Contribute to rajatjindal/wasm-console development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  20. 20VO
  21. 21AT
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    Viktor NV-1 Synthesizer.

    2015 · nicroto.github.io · its alternatives →

  23. 23

    Create acid techno, in your browser with Acid Machine 2.

    2015 · errozero.co.uk · its alternatives →

  24. 24AJ

    SYNTHI-JS is a JavaScript emulation of the legendary EMS Synthi A analog synthesizer.

    2016 · alexnisnevich.github.io · its alternatives →

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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 →