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Mongrel 2 logo.png
Developer(s)Zed A. Shaw
Stable release
1.12.2 / June 15, 2019; 15 months ago (2019-06-15)[1]
Repository Edit this at Wikidata
Written inC
Operating systemUnix-like
TypeWeb server
LicenseRevised BSD License[2] Edit this at Wikidata

Mongrel2 is an open-source "language agnostic" web server written by Zed Shaw, and is the successor to Shaw's Mongrel server. The server supports HTTP, Flash XMLSockets, WebSockets and long polling connections.[3]

Language agnostic[edit]

Mongrel2 is described as language agnostic, meaning it does not prefer any specific programming language over another. The server's documentation says:

The term 'language agnostic' came from people who read about Mongrel2 in the early days, and it means that Mongrel2 does not try to promote any one language over any others.[4][5]


Shaw began working on the server in June 2010 and released version 1.0 of the software on September 1, 2010.[4] Mongrel2 has nothing in common with the original Mongrel webserver, except for using the same HTTP parser.[6]


  1. ^ "Releases". Github. Retrieved 6 September 2019.
  2. ^ "Mongrel2 license".
  3. ^ "Language agnostic web server Mongrel2 1.0 released". H Online. Retrieved 14 September 2010.
  4. ^ a b "Mongrel2 1.0 Is 'Language Agnostic'". Retrieved 14 September 2010.
  5. ^ "Mongrel2 Documentation: Language Agnostic". Retrieved 14 September 2010.
  6. ^ "Mongrel2 Has Begun". Retrieved 14 September 2010.

External links[edit]