TL:DR; Commercial version of pdftk command line tools for manipulating PDF files.
Commercial version of pdftk command line tools for manipulating PDF files. Split, merge, encrypt, decrypt, watermark, attach, impose etc. Full manual provided.
A-PDF Watermark is a fast desktop utility program that lets you add watermarks to a batch of Acrobat PDF documents. You can make watermarks from text, logo, date/time stamp, page number, image, pdf file, line and sharp etc.
Advanced PDF Repair(APDFR) is a powerful PDF recovery tool. It uses advanced technologies to scan the corrupt or damaged Acrobat PDF files and recover your data in them as much as possible, so to minimize the loss in file corruption.
Detect-N-Lock secures a workstation user's files across a network of machines, ensuring that all copies of the files are locked while the user is working with the file.