Perl Superglue for Web frameworks and Web Servers (PSGI toolkit)http://search.cpan.org/dist/Plack/
Plack is a set of tools for using the PSGI stack. It contains middleware
components, a reference server and utilities for Web application
frameworks. Plack is like Ruby's Rack or Python's Paste for WSGI.
See the PSGI manpage for the PSGI specification and the PSGI::FAQ manpage
to know what PSGI and Plack are and why we need them.