PDFsam!

The smallest, fastest, most feature-rich PDF editor/viewer available

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 .

PDF-Shuffler is a small python-gtk application, which helps the user to merge or split pdf documents and rotate, crop and rearrange their pages using an interactive and intuitive graphical interface. It is a frontend for python-pyPdf.

Nitro Pro gives you everything you need to create, convert, edit, sign, and share 100% industry-standard PDF files. It's simple, straightforward, and intuitive to use — so you can work more productively, your way.

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.

qvPDF is a PDF creator for Windows, but you can also merge & split. Its implemented as printer driver and uses plugins to execute different actions after creating the PDF. Processing parameters can be written directly into the printed document like: @|[email protected]|@ .The user Interface is available in 5 languages.

UnityPDF lets you merge, split, divide, rotate, protect PDF files and more. All features are easy to use and do not require complex skills.

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 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.