A fast and robust web server and application server for Ruby, Python, Node.js and Meteor apps. It makes deploying in production much easier and is scalable.

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First released 2012
Developed by Phusion B.V.
Latest stable version 6
Open-source Not defined
Used by Pixar, America Express, SalesForce, Hitachi

Interesting facts

Phusion Passenger claims that it is capable of reducing Rails's memory consumption by 33%


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