Rust Wasi

Open-source Rust projects categorized as Wasi
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WASM WebAssembly Rust Kubernetes Runtime
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Top 20 Rust Wasi Projects

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  1. wasmer

    🚀 Fast, secure, lightweight containers based on WebAssembly

    Project mention: Wasmer: Fast, secure, lightweight containers based on WebAssembly | news.ycombinator.com | 2026-07-02

  2. SaaSHub

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  3. wasmtime

    A lightweight WebAssembly runtime that is fast, secure, and standards-compliant

    Project mention: WebAssembly in 2026: A Practical Guide to Wasm and WASI for Modern Developers | dev.to | 2026-06-14

    curl https://wasmtime.dev/install.sh -sSf | bash rustup target add wasm32-wasip2 cargo build --target wasm32-wasip2 --release wasmtime target/wasm32-wasip2/release/my-app.wasm

  4. WASI

    WebAssembly System Interface

    Project mention: WASI 0.3.0 Released | news.ycombinator.com | 2026-06-12

    Ok, I've swapped that link in at the top and put the submitted URL (https://github.com/WebAssembly/WASI/releases/tag/v0.3.0) in the toptext.

  5. krustlet

    Kubernetes Rust Kubelet

  6. wasmi

    Efficient and versatile WebAssembly interpreter for embedded systems.

    Project mention: Smart Escrow Series #3: Security | dev.to | 2025-12-18

    Wasmi, the chosen runtime, has also been audited twice previously for blockchain use cases. Those audit reports are available publicly here: https://github.com/wasmi-labs/wasmi/tree/main/resources

  7. golem

    Golem Cloud is the agent-native platform for building AI agents and distributed applications that never lose state, never duplicate work, and never require you to build infrastructure.

    Project mention: The Road to the WASM Component Model 1.0 | news.ycombinator.com | 2026-06-10

    If you're interested in this, then you should check out https://github.com/golemcloud/golem

    Golem is a durable workflow platform and can run any wasm.

  8. wit-bindgen

    A language binding generator for WebAssembly interface types

  9. runwasi

    Facilitates running Wasm / WASI workloads managed by containerd

  10. wasmer-js

    Monorepo for Javascript WebAssembly packages by Wasmer

    Project mention: Ghostty compiled to WASM with xterm.js API compatibility | news.ycombinator.com | 2025-12-01

    This is awesome! I'm Syrus, from Wasmer. Would love to help you with this!

    We are releasing soon a new version of wasmer-js, so it should be very easy to use it with webassembly.sh (note webassembly.sh and wasmer.sh share the same code)

    https://github.com/wasmerio/wasmer-js/tree/main/examples/was...

  11. obelisk

    Durable & Deterministic Workflow Engine (by obeli-sk)

    Project mention: SQLite is all you need for durable workflows | news.ycombinator.com | 2026-05-29

    Subscribe to this issue: https://github.com/obeli-sk/obelisk/issues/65

  12. wasi-rs

    WASI bindings for Rust

  13. wasi-webgpu

    Project mention: Wasi: WebGPU – A Proposed WebAssembly System Interface API | news.ycombinator.com | 2026-06-12

  14. wasi-vfs

    A virtual filesystem layer for WASI.

  15. 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.

  16. agent-sandbox

    A sandboxed execution environment for AI agents via WASM (by Parassharmaa)

    Project mention: Show HN: A sandboxed execution environment for AI agents via WASM | news.ycombinator.com | 2026-02-08

  17. ww

    Decentralized Agentic OS — sandboxed WASM agents with capability-based security over Cap'n Proto RPC

    Project mention: The lethal trifecta in two-agent practice: seven incidents in 48 hours | dev.to | 2026-05-03

    Simon Willison's name for the agent-security failure mode is “the lethal trifecta”: an LLM-powered system holds private data, processes untrusted content, and has unrestricted external communication, and any one of those three legs can leak the other two. The framing keeps coming up in agent-systems threads — most recently in a Farcaster /founders question by the founder of Wetware asking what readers were doing to protect themselves, and whether they had been pwned in eval.

  18. demo-stargazers

    A simple Obelisk webhook endpoint and a workflow that monitors GitHub repositories.

  19. asterbot

    A modular AI agent built on WASM components. Every capability is sandboxed and swappable.

    Project mention: Show HN: Asterbot, AI agent where every capability is a sandboxed WASM component | news.ycombinator.com | 2026-02-10

  20. nexus

    A high-performance, zero-trust distributed framework in Rust. Orchestrates ephemeral WASI P2 components and native containers with unified identity (DPoP), JIT secrets (Vault), and multi-model persistence (SurrealDB). Built for high-density, memory-safe computing in FinTech and DefTech. (by AnatoliiShliakhto)

    Project mention: Errors as Infrastructure: Why the first crate in NEXUS wasn't networking. | dev.to | 2026-05-15

    NEXUS

  21. wasi-calcit

    Running Calcit on WASI

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).

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Index

What are some of the best open-source Wasi projects in Rust? This list will help you:

# Project Stars
1 wasmer 20,904
2 wasmtime 18,383
3 WASI 5,726
4 krustlet 3,602
5 wasmi 2,153
6 golem 1,605
7 wit-bindgen 1,429
8 runwasi 1,319
9 wasmer-js 1,100
10 obelisk 584
11 wasi-rs 362
12 wasi-webgpu 210
13 wasi-vfs 186
14 webassembly-tour 149
15 agent-sandbox 31
16 ww 16
17 demo-stargazers 11
18 asterbot 9
19 nexus 2
20 wasi-calcit 1

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