Apache PDFBox - The Apache PDFBox™ library is an open source Java tool for working with PDF documents.
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.
iTextPDF - iText offers flexible tools for PDF creation, editing and inspection.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
IronPDF - SDK for creating and editing PDFs.
Wondershare PDFelement - All-in-one PDF editor