WebVM is a virtual Linux environment running in the browser via WebAssembly. WebVM doesn’t require registration. It can be forked, unmodified with no restrictions. WebVM is powered by CheerpX, an x86 virtualization engine in WASM which enables the safe, sandboxed execution of Linux binaries client-side. CheerpX includes an x86-to-WebAssembly JIT compiler, a virtual block-based file system, and a Linux syscall emulator. Both WebVM and CheerpX are free-to-use for FOSS and personal projects.