JSignPdf is a Java application which adds digital signatures to PDF documents. It can be used as a standalone application or as an add-on in OpenOffice.org. The application uses the jsignpdf-itxt library for PDF manipulations (based on iText library in version 2.1.7 with LGPL/MPL license). JSignPdf is Open-Source software and can be freely used in both private and business sectors.
What's new in JSignPdf
Adds the ability to customize signature text even more. Signature attributes can be used in custom L2 texts now. Supported placeholders are: