The Image::Size module for Perl provides a clean interface for fetching image dimensions (and type, when unknown) from graphics files in a wide variety of common formats. It is a pure Perl extension (no C or XS linking required) that has been tested on a variety of UNIX, Linux and BSD systems, as well as MacPerl and Windows ports of Perl. It was designed around and tuned for use in CGI application development, but is useful in other areas as well.
RPC::XML is a set of classes in Perl for implementing XML-RPC services both from the client side and the server side. Included are classes for writing clients, writing stand-alone servers (using the HTTP::Daemon class of LWP or the Net::Server class for transport implementation), or implementing a server as an Apache/mod_perl location handler.
Skopje is a collection of small utility classes that each provide a piece of functionality based on Perl. Rather than trying to make Java code look more Perl-ish, it focuses on elements like "join" that would be useful, but are not present in the JDK. Its mechanics and syntax try to follow the "Java way" as closely as possible.