Xsltp.pl is a pure Perl XSLT parser. It requires XML::Parser and CGI packages (very likely you have them) and version of Perl higher than 5.6.0. The program was designed for use as a server which can accept user request, output result and save data on the local disk. It uses HTTP protocol built in the processor for passing the parameters to XSLT stylesheets.

XML::Node is for those who use Perl to process XML files. XML::Node is built on top of XML::Parser and provides a simplified programming interface. XML::Node users can register callback sub-routines or variables to specific type of XML nodes. The values of the specified XML nodes are automatically copied to the corresponding variables. When specified XML tags are found, registered callback sub-routines are called. XML::Node is a shortcut to XML::Parser if you don't care much about details of XML files.