WebAssembly Toolchains

A curated list of production-ready toolchains for compiling, debugging, and optimizing WebAssembly applications.

WASI SDK

The official WebAssembly System Interface (WASI) SDK for building sandboxed applications.

C/C++ to WebAssembly compiler targeting browsers, Node.js, and Web Workers.

Compile Rust to WebAssembly with WASI support for maximum performance and safety.

Feature	WASI	Emscripten	Rust
Language Support	C, C++	C, C++	Rust
Performance	Native-speed	JavaScript Bridge	Near-native
Memory Safety	✅	⚠️	✅
WASI Compliance	✅	❌	✅

use wasm_bindgen::prelude::wasm_bindgen;

#[wasm_bindgen]
pub fn add(a: i32, b: i32) -> i32 {
    a + b
}

Help shape the next generation of WebAssembly toolchains or contribute to the most popular ones today.