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. The main architecture of the library is object oriented. The user agent, requests sent and responses received from the WWW server are all represented by objects. This makes a simple and powerful interface to these services. The interface should be easy to extend and customize for your needs. The main features of the library are: o Contains various reuseable components (modules) that can be used separately or together. o Provides an object oriented model of HTTP-style communication. Within this framework we currently support access to http, gopher, ftp, news, file, and mailto resources. o The library be used through the full object oriented interface or through a very simple procedural interface. o Support the basic and digest authorization schemes. o Transparent redirect handling. o Supports access through proxy servers. o URL handling (both absolute and relative URLs are supported). o A parser for robots.txt files and a framework for constructing robots. o An experimental HTML parser and formatters (for PostScript and plain text). o The library can cooperate with Tk. A simple Tk-based GUI browser called 'tkweb' is distributed with the Tk extention for perl. o An implementation of the HTTP content negotiation algorithm that can be used both in protocol modules and in server scripts (like CGI scripts). o A simple command line client application called lwp- request.