JSage

Yes, porting https://SageMath.org to the browser is part of the plan, and this is a key foundation for that. I ported some of the components of Sage (e.g., https://libntl.org/) already as part of https://github.com/sagemathinc/jsage, and I don't see any fundamental obstruction to porting all of Sage, except time. It would be great if once CoWasm is more stable, I can get some help porting some components to WASM.

And JSage is like Sage, but for WebAssembly and JavaScript: https://github.com/sagemathinc/JSage

And here is the more lightweight and flexible (in some ways) one from Wasmer, before they completely rewrote it in Rust: https://github.com/sagemathinc/JSage/tree/main/packages/wasi It took me some work to track down the old version, fix some bugs in it, and keep it going. But I personally find the old version very useful too, and if you can see from the comments that it has an interesting history.

Python does, via pypy [1], which has very impressive performance and Python3 support. However, there are some subtle drawbacks, e.g., building from source takes hours instead of seconds (like CPython), and C extensions are slower. Still, the performance of pypy on a wide range of pure Python microbenchmarks is extremely impressive, and comparable to V8 (I've been collecting such benchmarks at [2] lately). [1] https://www.pypy.org/ [2] https://github.com/sagemathinc/JSage/tree/main/packages/jpyt...

Here's a third called "JPython", which I've been writing lately for fun: https://github.com/sagemathinc/JSage/tree/main/packages/jpyt...