PDFsam
Freemium
PDFsam Basic extremely useful tool for splitting and merging PDFs in a configuration that suits you.
Master PDF Editor
Freemium
Master PDF Editor is а complete application for editing PDF documents and PDF files for Mac OS X, Windows and Linux.
Adobe Acrobat DC
Commercial
Adobe Acrobat Reader DC is the industry standard for viewing, printing, signing and commenting on PDF documents.
jPdf Tweak
Open Source
jPDF Tweak is a Java Swing application that can combine, split, rotate, reorder, watermark, encrypt, sign, and otherwise tweak PDF files.
Compare PDFill with alternatives
Compare Adobe Acrobat DC and PDFill and decide which is most suitable for you.
Compare Master PDF Editor and PDFill and decide which is most suitable for you.