• is a x86 to WebAssembly virtualization technology

  • can virtualize native executables or full operating systems

  • can run any x86 application, fully client side

  • use case: running Flash content in the browser by virtualizing the Flash player

How is this possible?

CheerpX 101


Two-tiered execution engine

Interpreter that does code discovery + bookeeping to allow to efficiently pass hot code to the JIT.


in WebAssembly

CheerpX JIT engine, a WebAssembly module that compiles new Webassembly modules.


Emulate devices or system calls

CheerpX emulates system calls or device access using Web APIs and browser functions.


General purpose platform technology

CheerpX can be used to run single x86 application, or full systems.


Tell me more

We are working on CheerpX, but it's not yet available generally.
If you are curious and want to know more, stay tuned, or get in touch!

Contact us for more information
Recent news

Latest about CheerpX

CheerpX preview at WASM SF

Our Senior Developer Yuri will be previewing CheerpX at the WebAssembly San Francisco Meetup at Cloudflare. Join us!

Attend the presentation

Saving Flash

How CheerpX is being used to save Flash content from extintion, by virtualizing the Flash player, previewed by our CTO.

Read article