Emscripten
Emscripten is an open-source compiler toolchain that converts C and C++ code into WebAssembly (Wasm) or asm.js, enabling high-performance applications to run in web browsers. It uses the LLVM compiler infrastructure to compile source code into a low-level intermediate representation, which is then translated into JavaScript-compatible formats. This allows developers to port existing native applications, libraries, and games to the web without rewriting them from scratch.
Developers should learn Emscripten when they need to bring performance-critical C/C++ applications to the web, such as game engines, scientific simulations, or legacy software, leveraging WebAssembly for near-native speed. It is particularly useful for projects requiring code reuse across platforms, enabling web deployment of libraries like OpenGL or SDL. Use cases include porting desktop games to browsers, running complex algorithms in web apps, and integrating native libraries into JavaScript environments.