WWW client/server library for Perl (aka LWP) Libwww-perl is a collection of Perl modules which provides a simple and consistent programming interface (API) to the World-Wide Web. The main focus of the library is to provide classes and functions that allow you to write WWW clients, thus libwww-perl said to be a WWW client library. The library also contain modules that are of more general use, as well as a simple HTTP/1.1-compatible server implementation.