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VeryPDF PDF Editor
VeryPDF PDF Editor is an easy-to-use application designed for users familiar with Microsoft Office and similar applications. VeryPDF PDF Editor provides tools to enable...
PortableSigner is a signing (with X.509 certificates) program for PDF files. It's plattform independent and runs (tested) under Windows (2000, XP, ...), Linux and...
It's possible to sign PDF documents digital with X.509 certificates. This signed documents are read only. Therefore it's possible to implement "electronic paper"
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