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CheerpX: a WebAssembly-based x86 virtual machine in the browser, Yuri Iozzelli

WebAssembly NA · 7K views · 2020-02-18 · 37:11

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Overview

A talk by Yuri Iozzelli at a WebAssembly meetup on CheerpX, an x86 virtual machine running in the browser. It uses a JIT compiler that emits WebAssembly at runtime to run real native applications. It covers the architecture and demos such as porting a multiplayer C++ game.

On Hacker News

HN points to it as an impressive look at how far WebAssembly can go, and as the explanation of the architecture behind CheerpX and its Flash support.

Recommended by 2 HN people across 3 months · HN mentions 2020–2025

Topics

Web developmentOperating systems & kernelsCompilers, interpreters & program analysis
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webassemblycheerpxx86jit compilerflash

What people said

gavinray · 2022-03 · Strong recommendation

This company has an x86-to-WASM compiler that lets you execute arbitrary binaries in the browser. Also a JVM to WASM transpiler. There's a fantastic Meetup presentation given by one of them where they show running a C++ multiplayer game with both client AND server running in a browser, using WebRTC as a networking polyfill. Really mindblowing: [VIDEO]

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gavinray · 2025-03 · Recommendation

5 years ago, I watched a YouTube recording of a meetup talk given by one of the CheerpX engineers: [VIDEO] In it, they showed a functional demo of porting an OSS multiplayer C++ game entirely to the browser with WASM. Afterwards, I read some of their engineering content and was blown away. It's been fascinating to watch the CheerpX/CheerpJ progress from afar over the years.

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btown · 2020-06 · Recommendation

Here's a talk by the team as well: [VIDEO] And their website: [LINK] This is honestly one of the coolest things I've seen, and given the amount of Flex/Spark software for enterprise out there, it could drastically change the legacy software landscape.

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Sources

Video by WebAssembly NA, played through YouTube.

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