Express.js

Express.js, or simply Express, is a back end web application framework for building RESTful APIs with Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs. It has been called the de facto standard server framework for Node.js.

Express.js
Developer(s)TJ Holowaychuk, StrongLoop and others
Initial release16 November 2010 (2010-11-16)
Stable release4.18.1 (April 29, 2022 (2022-04-29)) [±]
RepositoryExpress.js Repository
Written inJavaScript
PlatformNode.js
TypeWeb framework
LicenseMIT License
Websiteexpressjs.com

The original author, TJ Holowaychuk, described it as a Sinatra-inspired server, meaning that it is relatively minimal with many features available as plugins. Express is the back-end component of popular development stacks like the MEAN, MERN or MEVN stack, together with the MongoDB database software and a JavaScript front-end framework or library.

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