jPDFFields allows your application to get and set field values.
iTextPDF - iText offers flexible tools for PDF creation, editing and inspection.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
iText - iText is an intuitive and refined text editor with word processing completely rewritten in Cocoa...
Wondershare PDFelement - All-in-one PDF editor
RadaeePDF Master SDK - RadaeePDF SDK is a powerful PDF rendering library for Android iOS and Windows 8/8.1, WindowsPhone and Windows 10 UWP. RadaeePDF SDK can render, create, annotate, modify PDF files. RadaeePDF SDK can get and set PDF form and acroform.
Microsoft Word - Microsoft Word is a commercial word document processor for Windows.