This is the Catalyst manual

Catalyst is a web application framework. This means that you use
it to help build applications that run on the web, or that run
using protocols used for the web. Catalyst is designed to make it
easy to manage the various tasks you need to do to run an application
on the web, either by doing them itself, or by letting you "plug
in" existing Perl modules that do what you need.

Homepage:
https://metacpan.org/release/Catalyst-Manual
