Cloudflare Workers also supports Wasm and so supports all those languages, too, in theory. In practice, though, Python's, Perl's, and PHP's Wasm support is ext

Cloudflare Workers also supports Wasm and so supports all those languages, too, in theory. In practice, though, Python's, Perl's, and PHP's Wasm support is extremely immature and probably won't meet the needs of a production web application today. Go is closer but still presents challenges. Rust seems to have by far the most mature Wasm tooling (and Rust support is built-in to the Workers CLI tool). C and C++ are also reasonably usable.