Native Client
Native Client (NaCl) is a sandboxing technology developed by Google that allows running native code securely in web browsers. It enables developers to write performance-critical applications in languages like C and C++ that execute at near-native speed within a browser environment. NaCl provides a secure execution environment by isolating native code from the underlying system and web page.
Developers should learn Native Client for building high-performance web applications that require intensive computation, such as games, multimedia processing, or scientific simulations, where JavaScript performance is insufficient. It is particularly useful when porting existing C/C++ codebases to the web without rewriting them in JavaScript, offering a bridge between native desktop applications and web platforms. However, note that its adoption has declined with the rise of WebAssembly as a more modern alternative.