Tornado (web server)

Tornado
Original authorFriendFeed
DevelopersBen Darnell and FriendFeed engineering team
Initial release2009 (2009)
Stable release
6.5.3  / 11 December 2025 (11 December 2025)
Written inPython
Operating systemCross-platform
Available inEnglish
TypeWeb server
LicenseApache License 2.0
Websitewww.tornadoweb.org 
Repositorygithub.com/tornadoweb/tornado

Tornado is a scalable, non-blocking web server and web application framework written in Python. It was developed for use by FriendFeed; the company was acquired by Facebook in 2009 and Tornado was open-sourced soon after.