What is WebVM?

WebVM is a virtual Linux environment running in the browser via WebAssembly. It is powered by the CheerpX virtualization engine, which enables safe, sandboxed, client-side execution of x86 binaries. Being built entirely on standard web technologies — WebAssembly in particular — it is fully isolated from your system and your other browser tabs.

How it works

CheerpX includes an x86-to-WebAssembly JIT compiler, a virtual block-based file system, and a Linux syscall emulator. Together, these components make it possible to run unmodified Linux software directly inside a browser tab.

Claude Integration

WebVM integrates the Computer Use feature from Claude. Since Claude APIs can be used directly from a browser tab, it is possible to combine them with WebVM to create a secure and private environment to experiment with Claude Computer Use capabilities. Read more about the WebVM and Claude integration in our dedicated blog post.