PdfRobot is an application designed to sort and move PDF-files based on patterns. As of now it recognizes only text patters, as this is what I use at present. Basically it monitors a folder, and moves files, and as such it can assist a PDF-flow...
I developed the application for use with document printers... It is currently scanning al documents printed by a pdf-printer, and sorting the documents to different folders (e.g. invoices in one folder, letters in another folder...).