CUPS is a standards-based printing system for Mac OS X and other Unix-like operating systems. It provides the System V and Berkeley command line interfaces, and uses the Internet Printing Protocol ("IPP") as the basis for managing print jobs and queues. The Line Printer Daemon (LPD) Server Message Block (SMB), and AppSocket (a.k.a. JetDirect) protocols are also supported with reduced functionality. CUPS adds network printer browsing and PostScript Printer Description ("PPD") based printing options to support real world printing.
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).
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.
The Hummus PDF Writer library allows you to generate PDF files. It was developed with a principal “one-off” method of generating PDF files. Adhering to this idea, it is both fast and retains a low memory signature regardless of how large the file grows. The library has a set of high level features for adding content to a PDF, including creation of pages; drawing primitives and any of the simple PDF operators for drawing content; embedding of PDF, JPEG, and TIFF images; Unicode text support with Type1, TrueType, and OpenType fonts; and defining reusable objects using XObject Forms. You can also use the library as a PDF parser. The library is very extensible. It is easy to implement more PDF features by using the lower level set of methods, which provide access to the PDF building blocks themselves. Adding a feature requires you to be familiar with the PDF formatting of that feature, but will not require you to write the basic PDF building blocks, as the library handles this.
SlideShoQ is PDF presentation software that supports two-screen presentations: One screen shows the current slide fullscreen, i.e. what you want to show on the projector for the audience; the second screen is your computer, which shows the current, next, and previous slides, current time, and other useful information.