PDD is an open-source program created by Srivats. It is a convenient convenient wrapper around the Wireshark/Ethereal tools to convert packet hexdumps into well formatted XML containing the decoded protocols and protocol contents. It is only a wrapper around WiresHark, because it is only the tool that can be used to convert packets into XML. You need to be installed to use PDD, because PDD only works around the tools installed on Wireskark.
Source: https://thehackernews.com/2011/08/pdd-packet-dump-decode-released.html