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Life & fun · alternatives · 2026

24 alternatives to NetWasm – New .NET Compiler/Runtime (82.5 KB Hello World WASM/WASI)

Edit C#, compile locally in your browser, and download a WebAssembly component.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    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) ...

    2024 · wasmer.io · its alternatives →

  2. 2

    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 →

  3. 3

    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 →

  4. 4

    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. 5VO
  6. 6

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

    2023 · github.com · its alternatives →

  7. 7

    Show HN: TinyWasm - A tiny WebAssembly Runtime written in Rust Hi HN! I'm excited to share TinyWasm (https:&#x2F;&#x2F;github.com&#x2F;explodingcamera&#x2F;tinywasm), a WebAssembly Interpreter I developed for my final university project. The main goal of this project was to deepen my understanding of WebAssembly and interpreter design. TinyWasm successfully passes all the official WebAssembly 1.0 tests and also includes features from future proposals such as like bulk memory operations. Initially more of a research project, TinyWasm focuses on simplicity and portability. It has minimal…

    2024 · github.com · its alternatives →

  8. 8

    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 →

  9. 9

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

    2022 · runno.dev · its alternatives →

  10. 10

    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 →

  11. 11

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

    2019 · github.com · its alternatives →

  12. 12
  13. 13

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

    2017 · github.com · its alternatives →

  14. 14

    New binary format for compiling applications for the web

    2015 · github.com · its alternatives →

  15. 15

    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 →

  16. 16IW

    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 →

  17. 17

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

    2024 · github.com · its alternatives →

  18. 18

    Hi everyone, I built a runtime to isolate untrusted code using wasm sandboxes. Basically, it protects your host system from problems that untrusted code can cause. We’ve had a great discussion about sandboxing in Python lately that elaborates a bit more on the problem [1]. In TypeScript, wasm integration is even more natural thanks to the close proximity between both ecosystems. The core is built in Rust. On top of that, I use WASI 0.2 via wasmtime and the component model, along with custom SDKs that keep things as idiomatic as possible. For example, in Python we have a simple decorator:…

    Feb 2026 · github.com · its alternatives →

  19. 19

    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 →

  20. 20

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

    2024 · github.com · its alternatives →

  21. 21

    Run KolibriOS, Linux or Windows 98 in your browser

    2022 · copy.sh · its alternatives →

  22. 22

    Run your favourite programming languages online

    2019 · mycompiler.io · its alternatives →

  23. 23IB

    2020 · timdaub.github.io · its alternatives →

  24. 24CO

    A Portable C ➤ WASM CDN

    2017 · turbo.github.io · its alternatives →

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