PDF-Shuffler!

PDFsam Basic is a free, open source, multi-platform software designed to:

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.

PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use. It is a easy to use tool to collate (merge), split, encrypt, decrypt, stamp and rotate (only 90°, 180° or 270°) pdf documents. Portable Version: http://portableapps.com/apps/office/pdftk_builder_portable .

You can reorder, rotate, and remove pages, export images from a document, edit the title, subject, author, and keywords, and combine documents via drag and drop.

With PDFill you can create, fill, delete and submit PDF form fields; insert new formatted text, check, image, hyperlink, whiteout, highlight, drawing, comment and annotation anywhere in the document; save, print or email the filled and password-protected PDF; save and resume your filling anytime. PDF Writer is Freeware. PDF Editor is not.

PDF Chain is a GUI for pdftk written with gtkmm. You can merge some pdf files to one pdf file or split, set background/stamp or add attachments to one pdf file. There are also some options and tools.

Free (and open source) editor for manipulating PDF documents. GUI version + commandline interface. Scripting is used to a great extent in editor and almost anything can be scripted, it is possible to create own scripts or plugins.

PDFtk is a simple tool for doing everyday things with PDF documents. It comes in three flavors: PDFtk Free, PDFtk Pro, and our original command-line tool PDFtk Server.

PDF Shaper is a collection of free PDF tools, which allows you to merge, split, encrypt and decrypt PDFs, convert images to PDF, convert PDF to Word RTF or images, extract text and images from PDF. Program has easy-to-use user interface, supports Unicode characters and batch processing.

Sejda helps with your PDF tasks with a simpler, more pleasant and productive PDF platform.

jPDF Tweak is a Swiss Army Knife GUI application for PDF documents: combine, split, rotate, reorder (n-up, booklet), watermark, edit bookmarks/fileinfo/pagetransition, compress, encrypt, decrypt, sign, repair, edit attachments and more.

PDF Cutter is a free PDF document splitting software, it can help you to quickly split PDF files. Software supports three splitting methods, you can choose according to your requirements, simple and easy to use.

PDF Candy is a free online PDF toolset of 24 services for successful processing of PDF files. The service is completely free to be used (no accounts, fees or subscriptions) and secure. There are no ads on the website. The output files can be saved directly from the website. With the help of PDF Candy the users can: 1) split PDFs; 2) merge PDF files; 3) compress PDFs;4) unlock PDFs; 5) protect PDF documents with passwords;6) rotate pages of PDFs;7) add watermarks to documents of PDF format; 8) delete pages from PDF files; 9) convert PDF to Word; 10) convert Word to PDF;11) convert PDF to JPG;12) convert JPG to PDF;13) convert EPUB to PDF;14) convert MOBI to PDF;15) convert FB2 to PDF;16) convert PNG to PDF;17) convert TIFF to PDF;18) convert BMP to PDF;19) convert ODT to PDF;20) convert Excel to PDF; 21) convert PPT to PDF;22) convert PDF to BMP; 23) convert PDF to TIFF;24) convert PDF to PNG. »

Junko is a PDF tool developed for quicker and more efficient access to information needed from your PDF files, reorganizing them in a way that makes them easier to manage and handle.

Edit, convert, annotate, protect, merge, split, compress, and sign PDF files on Mac.