NodejsExpress

Node.js Express, commonly known as Express.js, is a minimal and flexible web application framework for Node.js. It provides a thin layer of fundamental web application features, including a robust routing API, middleware support, and a straightforward interface for handling HTTP requests and responses. Built on Node.js, Express leverages non-blocking I/O to support scalable web servers and APIs with a small footprint.

Express was created by TJ Holowaychuk and first released in 2010 as part of the Node.js ecosystem. It evolved through community contributions and has become the de facto standard framework for building web applications and APIs with Node.js. The project is maintained by a broad community of developers and many middleware modules.

Key features include a modular middleware system, which lets developers stack functions to handle requests; a flexible routing API for defining endpoints; support for template engines and static file serving; easy integration with databases and ORMs; and built-in error handling. Express is unopinionated, allowing developers to structure applications as they prefer.

Express is distributed under the MIT license and is widely used in production across organizations of all sizes. It integrates with the broader Node.js ecosystem and can be extended with thousands of middleware packages. While alternatives exist, Express remains a popular choice for building RESTful APIs and server-rendered web applications.