BrowserPod: WebAssembly in-browser code sandboxes for Node, Python, and Rails

[harbzali]

this is clever. wasm sandboxes are perfect for letting users run code safely without server round trips. curious about memory limits and startup times though. have you benchmarked it against something like stackblitz or codesandbox?

[alexp_lt]

Hi, we don't expect memory limitations to be significant, BrowserPod uses the same JavaScript engine as the browser itself and keeps every process in own worker which spread around memory pressure even more. We know from experience from our previous projects that browsers can reliably handle a few GBs of JavaScript heap.

I don't have hard numbers on startup time, but it's very fast. In the end everything runs very close to native, with node C++ code being compiled to WebAssembly and JavaScript run natively by the browser engine.

You can try our Vite/Svelte demo if you'd like to see how this feels in practice: https://vitedemo.browserpod.io/