https://labs.leaningtech.com/blog/browserpod-deep-dive
Node.js is now fully supported, Python is in preview and Rust is coming soon.
For a glimpse of the possibilities, check our Claude Code running fully in the browser: https://browsercode.io/claude
Are you running the version of Claude code that Anthropic distributes in the browser or did you have to adapt it to run on your stack?
Cheers
The version of Claude Code you see running is completely unmodified.
We have quite a bit of experience on the topic however, these are previous projects of ours:
WebVM (https://webvm.io): x86 Debian shell running client-side in the browser via x86 -> WebAssembly JIT compilation
Browsercraft (https://browsercraft.cheerpj.com): Minecraft running unmodified in the browser via our WebAssembly JVM (CheerpJ)
Keep up the great work
WebVM uses x86 virtualization and hence has a significant performance penalty, with the upside of running any existing software without needing the source code.
BrowserPod on the other hand runs WebAssembly binaries at almost native speed. Source code is required, but that is a fair compromise in the world of sandboxing. Most language runtimes and CLI tools are FOSS anyway, and many closed-source tools (such as Claude Code) are written in scripting languages and run on top of FOSS engines.
That is precisely the reason why we chose not avoid using any solution which uses virtualization, even though you get a full OS. QuickJS also pays a performance tax (no JIT) and still doesn't give you the OS.
On our part we're mostly focused on JS for the time being and we think that the best bet is to reuse the browser V8 engine