ePapyrus PDF-Pro!

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.

Nitro Reader offers features and functionality far beyond typical PDF readers, and makes working with PDF easier than ever before.

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

Master PDF Editor is complete solution for editing PDF and XPS files. You can insert, edit, remove, copy, add images or graphics. Export, import, remove and change page layouts. Also Master PDF Editor provides full functionality for changing PDF information, including author, title, subject, keywords, creator, and producer information.

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.

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.

Notability is the first truly integrated note-taking app for iOS. Standing on a framework that automatically links notes with audio recordings, Notability supports all of your note-taking needs -- handwriting, PDF annotation, word processing, and more work together seamlessly allowing you to create comprehensive, beautiful notes, quickly and simply. Auto Sync ensures your notes are backed up safely. And now you can personalize the look and feel of Notability’s library and toolbars with Themes, from colorful, to clean, to classic. »

Briss aims to offer a simple cross-platform application for cropping PDF files. A simple user interface lets you define exactly the crop-region by fitting a rectangle on the visually overlaid pages.

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.

PDF Expert lets you read and annotate PDF documents, highlight text, make notes and save these changes being compatible with Preview and Adobe Acrobat. Moreover, PDF Expert is the only iPhone application that can fill PDF forms!

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.

Infix PDF editor lets you open, edit and save PDF files. It’s easy and quick – you can change text, fonts, images and more. And, unlike other PDF editors, it works like normal word processing software, so it’s really easy to use.

PDFescape is your free, online PDF reader, editor, form filler, & form designer. Without required downloads or installations! Without watermarks! Without required registration! * Open PDF Files from your local computer * View PDF Files discovered on the web * Fill Out PDF Forms using PDF form fields * Forget Hand Writing with the typewriter style tool & complete non-fillable forms * Edit PDF files & forms o Add Text & Shapes to PDF files, allowing customization & markup of PDF o Move & Delete Pages in PDF files. »