PDFsam - PDFsam Basic, a free, open source, multi-platform software designed to split, merge, extract pages, mix and rotate PDF files
PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
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.
PDFTools by SheelApps - PDFTools
AutoMetadata - AutoMetadata is a tool for exploring and manipulating metadata, document properties, and viewer preferences in multiple PDF documents.
QPDF - QPDF is a command-line program that does structural, content-preserving transformations on PDF...