Tornado

A version of the scalable, non-blocking web server and tools that power FriendFeed. The FriendFeed application is written using a web framework that looks a bit like web.py or Google's webapp, but with additional tools and optimizations to take advantage of the underlying non-blocking infrastructure.

First released2009
Developed byFriendFeed
Latest stable version6
Open-sourceYes
Used byOink, Quora

Interesting facts

Facebook uses python web server which was originally built for friend feed. Later they acquired the Tornado web server.

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