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Top 16 Rust Wasi Projects
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Project mention: IoT Architectures Under Pressure: hosting a portable firmware (Part 3) | dev.to | 2025-05-16
Several WASM runtimes are available to execute our code. In this example, we'll use Wasmer, though other options exist. If we compile AOT (Ahead-of-Time), we don’t even need a runtime at all!
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The Bytecode Alliance maintains a number of open source WebAssembly projects, including two WebAssembly runtimes (Wasmtime and Wamr), the component model tools, and language-specific tooling like jco for Javascript and componentize-py for Python. Members of the Bytecode Alliance also do substantial work on standards for the W3C.
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The WASI systems libraries that define the standard platform for WebAssembly/wasm are Capability-based.
From their first high level goal:
> Define a set of portable, modular, runtime-independent, and WebAssembly-native APIs which can be used by WebAssembly code to interact with the outside world. These APIs preserve the essential sandboxed nature of WebAssembly through a Capability-based API design.
https://github.com/WebAssembly/WASI/blob/main/README.md#wasi...
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More like, an attempt in the field from 2 years ago
> [Warning] This project is currently not actively maintained.
But there is a library to build containerd shims with which is maintained: https://github.com/containerd/runwasi
Let's just entertain the idea and pretend that this is a notable project and that one would count it as DevOps tooling.
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[package] name = "middleware" version = "0.1.0" edition = "2021" [lib] crate-type = ["cdylib"] [dependencies.wit-bindgen] git = "https://github.com/bytecodealliance/wit-bindgen" rev = "d73c073b" [dependencies.wit-bindgen-rt] git = "https://github.com/bytecodealliance/wit-bindgen" rev = "d73c073b" [dependencies.flate2] version = "1.0.28"
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Project mention: Show HN: HipScript – Run CUDA in the Browser with WebAssembly and WebGPU | news.ycombinator.com | 2025-01-07
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golem
Golem is an open source durable computing platform that makes it easy to build and deploy highly reliable distributed systems. (by golemcloud)
I was super pumped when the Zio creator had a hand in creating this State-Machine-That-Can’t-Crash as a Service, called Golem. I was further excited because they had support for Grain, an OCAML style FP soundly typed language. I could just never find the time/inspiration to play as I still feel trapped in the “all things are AWS” vortex. Yes, I’ve played with & used CloudFlare in production, but… as a AWS Step Functions fan, this seemed like a cool idea. One of these weekends I’ll try again with TypeScript since Grain appears to be no longer an option.
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containerd-wasm-shims
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spiderlightning
A set of WIT definitions and associated implementations to enable app developers to work at a faster pace and require less knowledge of the environment in which they are executing.
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webassembly-tour
⚙️ Take you through a tour of WebAssembly (WASM targets on WASI) with wasmCloud, Krustlet, WAGI, etc. 🌟 Give it a star if you like it.
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Project mention: Show HN: Obelisk – a WASM-based deterministic workflow engine | news.ycombinator.com | 2025-04-09
I do agree that the ecosystem is not mature yet, but I was able to generate HTTP activities using LLM on a single shot.
1: https://github.com/obeli-sk/demo-stargazers
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Rust Wasi discussion
Rust Wasi related posts
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Why not object capability languages?
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Running Native Bash Scripts from a Web Interface Using WebAssembly and WASI
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Go + WASM: Run Native Code in Your Browser
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Show HN: Obelisk – a WASM-based deterministic workflow engine
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Looking Ahead to WASIp3
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WebAssembly on Kubernetes
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Get in loser. We're rewinding the stack
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A note from our sponsor - SaaSHub
www.saashub.com | 18 May 2025
Index
What are some of the best open-source Wasi projects in Rust? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | wasmer | 19,714 |
| 2 | wasmtime | 16,360 |
| 3 | WASI | 5,156 |
| 4 | krustlet | 3,584 |
| 5 | runwasi | 1,166 |
| 6 | wit-bindgen | 1,142 |
| 7 | wasmer-js | 999 |
| 8 | wagi | 897 |
| 9 | golem | 777 |
| 10 | containerd-wasm-shims | 326 |
| 11 | spiderlightning | 317 |
| 12 | wasi-rs | 293 |
| 13 | wasi-vfs | 164 |
| 14 | webassembly-tour | 148 |
| 15 | demo-stargazers | 5 |
| 16 | wasi-calcit | 1 |
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