WebMerge - WebMerge is an online platform that allows you to easily collect data, populate a document and send it to any contact automatically.
Apache PDFBox - The Apache PDFBox™ library is an open source Java tool for working with PDF documents.
Carbone - Generate and convert any document efficiently
IronPDF - SDK for creating and editing PDFs.
docassemble - docassemble is a free, open-source expert system for guided interviews and document assembly.
iText - iText is an intuitive and refined text editor with word processing completely rewritten in Cocoa...