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Dev tools · alternatives · 2026

24 alternatives to Compiling C in the browser using WebAssembly

We’ve reached a major milestone in making any software run with WebAssembly. Thanks to the newest release of Wasmer (4.4) and the Wasmer JS SDK (0.8.0) ...

Compiling C in the browser using WebAssembly is a development tool that enables C code compilation directly within a web browser through WebAssembly technology. It is designed for developers who want to run C… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Compiling C in the browser using WebAssembly launched in 2024; newer entries below may have overtaken it.

  1. 1
    Create Native Desktop Apps from WebAssembly▲47

    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 →

  2. 2
    How to compile C/C++ for WASM, pure Clang, no libs, no framework▲217

    A little help for programmers, who wants to run C&#x2F;C++ code in the browser. (This is my second attempt to show it, first time I got banned bcoz of my personal page domain, I don't really understand it why is is suspicious.)

    2022 · github.com · its alternatives →

  3. 3
    I wrote a WebAssembly Interpreter and Toolkit in C▲105

    Web49: WebAssembly Interpeter. Contribute to FastVM/Web49 development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  4. 4
    Wasmer – A Go library for executing WebAssembly binaries▲44

    🐹🕸️ WebAssembly runtime for Go. Contribute to wasmerio/wasmer-go development by creating an account on GitHub.

    2019 · github.com · its alternatives →

  5. 5
    Asmble – Compile WebAssembly to the JVM▲49

    Compile WebAssembly to JVM and other WASM tools. Contribute to cretz/asmble development by creating an account on GitHub.

    2017 · github.com · its alternatives →

  6. 6
    I built a web framework in C▲420

    a lightweight web framework in c. Contribute to ashtonjamesd/lavandula development by creating an account on GitHub.

    2025 · github.com · its alternatives →

  7. 7CO
    C on the Web with This C to WASM Build Server and CDN▲14

    A Portable C ➤ WASM CDN

    2017 · turbo.github.io · its alternatives →

  8. 8
    WebAssembly▲86

    New binary format for compiling applications for the web

    2015 · github.com · its alternatives →

  9. 9
    Firefox in WebAssembly▲273

    This is the entire Firefox browser rendering to a element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly. Here are a few things you might find interesting: - This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets. - There is a novel WASM->JS JIT for experimental site speedup - This port cost over 25k in opus&#x2F;fable tokens for debugging and JIT research This was just a fun experiment to push the boundaries of WebAssembly. For a more usable "browser in browser" experience, we also built…

    Jul 2026 · developer.puter.com · its alternatives →

  10. 10
    Wrote a tiny WebAssembly (wat2wasm) compiler in Go▲75

    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:&#x2F;&#x2F;luna-demo.vercel.app

    2022 · github.com · its alternatives →

  11. 11
    Jaws – a JavaScript to WASM ahead-of-time compiler▲290

    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 →

  12. 12
    WAPM – WebAssembly Package Manager▲186

    Hi HN! I’m Syrus, from the Wasmer team. We just released the new version of WAPM that is an order of magnitude better than the previous one (that we also announced here in HN two years ago! [0]), enabling an incredible experience for using and publishing WebAssembly packages. The tech stack that we are using includes: * Python and Django (for the backend) with Graphene (for the open GraphQL API [1]) and Django Channels with websockets over GraphQL [2] for subscriptions * Next.js [3] with React-Relay [4] and Tailwind.css [5] for the frontend * WebAssembly and Wasmer [6] (for the online shell)…

    2022 · wapm.io · its alternatives →

  13. 13
    A work-in-progress C compiler from scratch▲159

    Programming language that compiles into a x86 ELF executable. - riicchhaarrd/ocean

    2021 · github.com · its alternatives →

  14. 14
    I built a WASI playground for running CLI binaries in the browser▲115

    Run WebAssembly made for outside the browser, inside the browser.

    2022 · runno.dev · its alternatives →

  15. 15IW
    I wrote a book about WebAssembly▲410

    Hey HN! I've been working on a book about WebAssembly over the last few months, and it's finally available at http:&#x2F;&#x2F;levelupwasm.com! Why a book on WebAssembly you ask? Well... WebAssembly is awesome (obviously ) but it's certainly not the easiest thing to learn. So I wrote this book as a practical intro to using WebAssembly in your web apps. I would appreciate any feedback!

    2019 · its alternatives →

  16. 16CT
    C to WebAssembly in JavaScript▲6

    2017 · maierfelix.github.io · its alternatives →

  17. 17OC
    Online C/C++ to assembly visualizer [Weekend Project]▲149

    2012 · assembly.ynh.io · its alternatives →

  18. 18AE
    An Easy Programming Language – Built with WebAssembly▲144

    easyprog.online ist Ihre erste und beste Informationsquelle über easyprog. Hier finden Sie auch weitere interessante Links. Wir hoffen, dass Sie bei Ihrer Suche erfolgreich sind!

    2019 · easyprog.online · its alternatives →

  19. 19
    A dynamic C (Hot reloading) module-based Web Framework▲128

    A modular web framework for C, inspired by kernel modules. Dynamically upload and compile C code at runtime to build REST APIs, WebSocket services, and more. Includes support for JSON (Jansson), SQLite, OpenSSL, and streaming large data efficiently. - joexbayer/c-web-modules

    2024 · github.com · its alternatives →

  20. 20
    A List of Programming Languages That Currently Compile to WebAssembly▲11

    😎 A curated list of languages that compile directly to or have their VMs in WebAssembly - appcypher/awesome-wasm-langs

    2017 · github.com · its alternatives →

  21. 21
    My C compiler compiled itself▲275

    One of the most challenging projects of my life :)

    2024 · github.com · its alternatives →

  22. 22WG
    Write Go code in JavaScript files▲158

    I built a Vite plugin that lets you write Go code directly in .js files using a "use golang" directive. It compiles to WebAssembly automatically.

    Oct 2025 · npmjs.com · its alternatives →

  23. 23
    WebAssembly from the Ground Up – learn WASM by building a compiler▲7

    Hi HN! We (pdubroy & marianoguerra) just launched an online book called WebAssembly from the Ground Up. It's an online book to learn Wasm by building a simple compiler in JavaScript. This is the book we wish we'd had 3 years ago. Unlike many WebAssembly resources that focus on use cases and tooling, we wanted a deep dive into how Wasm actually works. We focus on the core of WebAssembly: the module format and the instruction set. We think the low-level details — the "virtual ISA" — are the most interesting part, and we had the crazy idea that writing a compiler is the best way to learn it.…

    2025 · wasmgroundup.com · its alternatives →

  24. 24
    Docker in the browser using x86-to-WASM recompilation▲119

    Run KolibriOS, Linux or Windows 98 in your browser

    2022 · copy.sh · its alternatives →

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