Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Catalyst is an open source web application framework written in Perl, that closely follows the model-view-controller architecture, and supports a number of experimental web patterns. It is written using Moose, a modern object system for Perl. It's heavily inspired by such frameworks as Ruby on Rails, Maypole, and Spring. Catalyst is primarily distributed through the CPAN, which is the official distribution channel for Perl libraries and applications. Catalyst's first development release took place on 28 January 2005. The first official version hit CPAN on 16 February 2005. As of 1 June 2009, Catalyst has 85 registered contributors.

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