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Developer(s)TJ Holowaychuk, StrongLoop and others
Initial releaseNovember 16, 2010; 10 years ago (2010-11-16)
Stable release4.17.1 (May 25, 2019; 2 years ago (2019-05-25)[1][2]) [±]
RepositoryExpress.js Repository
Written inJavaScript
TypeWeb framework
LicenseMIT License

Express.js, or simply Express, is a back end web application framework for Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.[3] It has been called the de facto standard server framework for Node.js.[4]

The original author, TJ Holowaychuk, described it as a Sinatra-inspired server,[5] 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.[6]


Express.js was founded by TJ Holowaychuk. The first release, according to Express.js's GitHub repository, was on the 22nd of May, 2010. Version 0.12

In June 2014, rights to manage the project were acquired by StrongLoop.[7] StrongLoop was acquired by IBM in September 2015;[8] in January 2016, IBM announced that it would place Express.js under the stewardship of the Node.js Foundation incubator.[9]


Express.js is used by Fox Sports, PayPal, Uber and IBM.[10]

See also


  1. ^ "Express 4.x changelog".
  2. ^
  3. ^ "Express.js home page".
  4. ^ Case study: How & why to build a consumer app with Node.js.
  5. ^ Holowaychuck, TJ. "Express 1.0beta". Archived from the original on 2015-07-06.
  6. ^ " The Friendly & Fun Javascript Fullstack for your next web application". Archived from the original on 13 June 2019. Retrieved 15 July 2019.
  7. ^ "TJ Holowaychuk Passes Sponsorship of Express to StrongLoop". StrongLoop. Archived from the original on 11 October 2016. Retrieved 11 February 2016.
  8. ^ "IBM snaps up StrongLoop to add Node.js smarts to BlueMix". Infoworld. IDG. 10 September 2015. Retrieved 11 February 2016.
  9. ^ "Node.js Foundation to shepherd Express Web framework". Infoworld. IDG. 10 February 2016. Retrieved 11 February 2016.
  10. ^ "Companies using Express". Retrieved 2018-12-04.

External links

Edited: 2021-06-18 12:39:52