DiffPDF had been updated to version v2.1.2 (2013-01-29)
http://soft.rubypdf.com/software/diffpdf
DiffPDF is used to compare two PDF files.
Requires Qt4: http://svn.netlabs.org/qt4
PortPage: http://svn.netlabs.org/qtapps/wiki/QT4%20Application
Project homepage: http://soft.rubypdf.com/software/diffpdf
Ported by Elbert Pol.