Dev tools · alternatives · 2026

24 alternatives to WebAssembly System Interface (WASI) with Sockets for Go

Go v1.21, scheduled for release in August 2023, adds experimental support for the WebAssembly System Interface (WASI). It'll be possible to natively compile server-side WebAssembly applications with Go, making Go a first-class citizen along with C/C++, Rust and Zig. GOOS=wasip1 GOARCH=wasm go build ... WASI is still in preview and is missing some key features, e.g. the ability to create sockets. Some WebAssembly runtimes have taken the initiative to extend the WASI preview, enabling a wider range of applications to run as WebAssembly modules. Today, we're open sourcing our WASI library…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. WebAssembly System Interface (WASI) with Sockets for Go launched in 2023; newer entries below may have overtaken it.

1. 1
   WASI socket extensions for Go 1.21▲6

   The WASI preview 1 specification was missing socket APIs so some WebAssembly runtimes added extensions to allow applications to do more than basic file I/O. This package enables a large class of Go programs (almost any program doing networking) to run when compiled to WebAssembly using the WASI preview 1 spec. It exposes functions similar to net.Dial and net.Listen that can be used to leverage the socket extensions thanks to the new //go:wasmimport compiler directive. It also has a set of examples of how to use popular Go packages when compiling to GOOS=wasip1. Contributions…

   2023 · github.com · its alternatives →

2. 2
   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 →

3. 3
   WebAssembly System Interface for Deno has been merged into Deno▲48

   2020 · deno.land · its alternatives →

4. 4
   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/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 →

5. 5
   A WebAssembly System Interface Implementation for Deno▲90

   A (WIP) WebAssembly System Interface implementation for Deno - caspervonb/deno-wasi

   2020 · github.com · its alternatives →

6. 6
   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://luna-demo.vercel.app

   2022 · github.com · its alternatives →

7. 7
   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 →

8. 8GP
   Go playground powered by WASM that runs in the browser▲140

   2021 · go-playground-wasm.vercel.app · its alternatives →

9. 9
   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 →

10. 10
    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 →

11. 11
    Compiling C in the browser using WebAssembly▲174

    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 →

12. 12
    Sandboxing untrusted code using WebAssembly▲76

    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 →

13. 13
    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 →

14. 14WS
    Webassembly.sh – WebAssembly WASI Terminal on your Browser▲8

    WebAssembly.sh: an online WebAssembly terminal to run WASI modules directly on your browser

    2019 · webassembly.sh · its alternatives →

15. 15
    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 →

16. 16WG
    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 →

17. 17
    Life – A secure, blazing-fast, cross-platform WebAssembly VM in Go▲111

    A secure WebAssembly VM catered for decentralized applications. - perlin-network/life

    2018 · github.com · its alternatives →

18. 18
    WebAssembly runtime embedded in Godot game engine▲32

    A WebAssembly runtime embedded in Godot game engine projects. Interact with Wasm modules from GDScript. Accessing Wasm modules via GDScript provides the following benefits. - Sandboxed environment allows safely loading zero-trust mods&#x2F;extensions to a project. - Single target means that Wasm modules can be built from any language e.g. Rust, Go, AssemblyScript and the single binary can be run on all platforms. - Fast execution compared to GDScript allows for offloading compute-heavy operations or running bots&#x2F;mods&#x2F;etc. at high FPS. This might be useful for loading mods, bot AI,…

    2023 · github.com · its alternatives →

19. 19
    Gowebly▲130

    A next-generation CLI tool to build web apps easier

    2024 · its alternatives →

20. 20CA
    Coi – A language that compiles to WASM, beats React/Vue▲225

    I usually build web games in C++, but using Emscripten always felt like overkill for what I was doing. I don't need full POSIX emulation or a massive standard library just to render some stuff to a canvas and handle basic UI. The main thing I wanted to solve was the JS&#x2F;WASM interop bottleneck. Instead of using the standard glue code for every call, I moved everything to a Shared Memory architecture using Command and Event buffers. The way it works is that I batch all the instructions in WASM and then just send a single "flush" signal to JS. The JS side then reads everything directly out…

    Jan 2026 · its alternatives →

21. 21
    TinyGo – LLVM-based Go compiler for microcontrollers▲177

    Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM. - tinygo-org/tinygo

    2018 · github.com · its alternatives →

22. 22WW
    Wasmino = WASM and Arduino – Running Arduino Code in Browser▲84

    2020 · blog.yifangu.com · its alternatives →

23. 23
    WebAssembly▲86

    New binary format for compiling applications for the web

    2015 · github.com · its alternatives →

24. 24MB
    My Book, Hands-On Software Engineering with Golang▲176

    2020 · packtpub.com · 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 →