This is Perl module Sledge::PSGI. INSTALLATION Sledge::PSGI installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan Sledge::PSGI Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION Sledge::PSGI documentation is available as in POD. So you can do: % perldoc Sledge::PS