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OpenJS Foundation·Jul 8, 2026·v26.5.0·open source

Node.js

Node.js is a free, open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a browser. It is built on Google's V8 engine and uses an event-driven, non-blocking I/O model to build scalable, high-performance network applications. Node.js is vital for modern web development, as it enables the creation of highly scalable, real-time, and data-intensive applications such as chat platforms, REST APIs, and high-concurrency streaming services, all while using a unified language across the entire stack.

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overview

Node.js is a free, open-source, cross-platform JavaScript runtime environment that executes JavaScript code outside of a browser. It is built on Google's V8 engine and uses an event-driven, non-blocking I/O model to build scalable, high-performance network applications. Node.js is vital for modern web development, as it enables the creation of highly scalable, real-time, and data-intensive applications such as chat platforms, REST APIs, and high-concurrency streaming services, all while using a unified language across the entire stack.

key features
  • 01Asynchronous and event-driven architecture
  • 02High-performance execution via Google's V8 engine
  • 03Single-threaded event loop for handling high concurrency
  • 04Rich ecosystem of libraries via the Node Package Manager (NPM)
  • 05Cross-platform compatibility for Windows, Linux, and macOS
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