Dev tools · alternatives · 2026

24 alternatives to WAPM – WebAssembly Package Manager

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)…

WAPM is a package manager for WebAssembly that allows developers to discover, use, and publish WebAssembly packages. Built by the Wasmer team, it features a GraphQL API backend, a Next.js frontend with an integrated… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. WAPM – WebAssembly Package Manager launched in 2022; newer entries below may have overtaken it.

1. 1
   WAPM▲126

   The WebAssembly Package Manager

   2019 · wasmer.io · its alternatives →

2. 2
   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 →

3. 3VO
   Vim online editor using WebAssembly, storing files using IndexedDB▲316

   2023 · vimonlineeditor.com · its alternatives →

4. 4
   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 →

5. 5
   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 →

6. 6
   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 →

7. 7
   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 →

8. 8
   A WebAssembly System Interface Implementation for Deno▲90

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

   2020 · github.com · its alternatives →

9. 9
   Wavvy – web-based audio editor (Audacity port)▲530

   I originally developed a WASM port of wxWidgets for https:&#x2F;&#x2F;dj.app&#x2F;. When it came time to open source wxWidgets-wasm, I decided to port another complex app as a test case, and Audacity seemed like the obvious choice. In the process, I also needed to write a new host API for PortAudio for playback and recording in the browser. https:&#x2F;&#x2F;github.com&#x2F;ahilss&#x2F;wxWidgets-wasm https:&#x2F;&#x2F;github.com&#x2F;ahilss&#x2F;portaudio-wasm https:&#x2F;&#x2F;github.com&#x2F;ahilss&#x2F;wavvy

   2022 · wavvy.app · its alternatives →

10. 10
    Zaplib – Speed up your webapp with Rust+Wasm▲175

    2022 · zaplib.com · its alternatives →

11. 11
    TinyWasm – A tiny WebAssembly Runtime written in Rust▲172

    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 →

12. 12
    WebAssembly▲86

    New binary format for compiling applications for the web

    2015 · github.com · its alternatives →

13. 13
    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 →

14. 14WC
    WebAssembly Calling Card – visual creativity with WASM▲42

    2020 · wacc.rancidbacon.com · its alternatives →

15. 15
    Execute JavaScript in a WebAssembly QuickJS sandbox▲206

    This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…

    2024 · github.com · its alternatives →

16. 16
    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 →

17. 17IW
    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 →

18. 18
    A an R7RS Scheme Implementation in WebAssembly▲84

    An R7RS Scheme implemented in WebAssembly . Contribute to PollRobots/scheme development by creating an account on GitHub.

    2022 · github.com · its alternatives →

19. 19
    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 →

20. 20
    I built a WASM-console using WebAssembly and tinygo▲18

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

    2024 · github.com · its alternatives →

21. 21
    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 →

22. 22
    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 →

23. 23
    A MCP server to evaluate Python code in WASM VM using RustPython▲41

    This is a pet project of mine where I build a MCP with WASM plugin system (published to OCI). I added a new plugin today that use Rust, compiled to WebAssembly to run Python code securely.

    2025 · github.com · its alternatives →

24. 24AW
    A WebAssembly game demo▲251

    2017 · funkykarts.rocks · 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 →