PortableSigner!

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 .

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.

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.

Foxit PDF Creator is a virtual printer that allows any application with printing capability to generate high-quality PDF documents conveniently and efficiently. Like the popular Foxit Reader, Foxit PDF Creator is designed specially based on the same Foxit core PDF technologies. With powerful search ability and high-performance PDF displaying and processing, it is small, fast and accurate for converting any popular file formats to professional quality PDF files. Once installed as a print driver, it enables you to create reliable PDF files at an incredibly fast speed while retaining the look and feel of the original documents. It supports Windows 2000/2003/XP/Vista (32-Bit & 64-Bit) and is compatible with PDF standard 1.7. »

Fill and sign any form. Even snap a picture of a paper form to fill out.

Online digital signature and document storage application. Free for personal use. Sign contracts online with this electronic signature software. Very flexible and intuitive. Convert any format to PDF standard. Has useful PDF editing tools. Allows to create new PDF document out of the individual pages from existing PDF Documents. Features include type anywhere capability, fill out forms, drag and drop the signature, date, name, sign here tags. The signature can be customized by uploading your own or drawing your own on the application. Custom encryption algorithms exclusive to SkySignature that guarantee security. Only $1 per month for professional version or $10 per year. (Cheapest price on the web. Prices cannot be beat.) »

Create your PDF files like a Pro

DigiSigner is a small but hot looking PDF viewer and signer tool.

PDFTools is a PDF management application. It can encrypt, decrypt, join, split, stamp, create and rearrange a PDF file.Version 1.1+ includes a very powerful and simple to use XML to PDF converter.

PyPDF2 - A utility to read and write pdfs with Python

Advanced PDF Utilities Free comes in handy when you need to deal with PDF files such as to merge or split pages, convert PDF to text & convert image to PDF or vice versa. This multipurpose program comes with its nice, clean user interface covering most functions. Download it and simplify your PDF processing to the extreme.