PDFtk Server is a simple commandline tool for doing everyday things with PDF documents. You can use it to merge PDF documents or collate PDF page scans, split PDF pages into a new document, rotate PDF documents or pages, decrypt input as necessary (password required), encrypt output as desired, fill PDF forms with X/FDF data and/or flatten forms, generate FDF data stencils from PDF forms, apply a background watermark or a foreground stamp, report PDF metrics, bookmarks, and metadata, add/update PDF bookmarks or metadata, attach files to PDF pages or the PDF document, unpack PDF attachments, burst a PDF document into single pages, uncompress and re-compress page streams, and repair corrupted PDF files (where possible).
Guardian Grab eases the process of downloading the digital editions of The Guardian and The Observer newspapers, which are available through Newspaper Direct. Guardian Grab interacts with the Newspaper Direct site to log-on, identify available sections, and download the newspaper in the PDF, mobi (Kindle), or ePub formats. Downloads are arranged by paper, date, and format under a specified directory. Guardian Grab also maintains a directory holding the latest copy of each paper for easy syncing.
Book Manager is intended to provide a simple interface to manage a collection of e-books. Users can also view their e-books, as well as many other files in tabs. With the collection disabled, Book Manager can also be used as a tab-supporting shell for the popular KDE PDF reader Okular.
pdf2htmlEX renders PDF files in HTML. It aims to provide an accurate rendering while being optimized for Web display. It is designed for scientific papers with complicated formulas and figures, so a precise rendering is the first concern, but general PDF files are also supported.