Plack/PSGI (Perl) == WSGI (Python) == Rack (Ruby) These are all abstraction layers (for each language) which then can be run seamlessly on top of CGI, SCGI, mo

Plack/PSGI (Perl) == WSGI (Python) == Rack (Ruby) These are all abstraction layers (for each language) which then can be run seamlessly on top of CGI, SCGI, mod_(perl|python|ruby), etc. - http://plackperl.org http://plackperl.org - http://en.wikipedia.org/wiki/Plack_(software) http://en.wikipedia.org/wiki/Plack_(software) - http://en.wikipedia.org/wiki/PSGI http://en.wikipedia.org/wiki/PSGI - http://en.wikipedia.org/wiki/Wsgi http://en.wikipedia.org/wiki/Wsgi - http://en.wikipedia.org/wiki/Rack_(web_server_interface) http://en.wikipedia.org/wiki/Rack_(web_server_interface)