iText

iText is a library that allows you to generate PDF files on the fly. iText is an ideal library for developers looking to enhance web- and other applications with dynamic PDF document generation and/or manipulation. iText is not an end-user tool. Typically you won't use it on your Desktop as you would use Acrobat or any other PDF application. Rather, you'll build iText into your own applications so that you can automate the PDF creation and manipulation process.

For instance in one or more of the following situations:

• Due to time or size, the PDF documents can't be produced manually.
• The content of the document must be calculated or based on user input.
• The content needs to be customized or personalized.
• The PDF content needs to be served in a web environment.
• Documents are to be created in "batch process" mode.

You can use iText to:

• Serve PDF to a browser
• Generate dynamic documents from XML files or databases
• Use PDF's many interactive features
• Add bookmarks, page numbers, watermarks, etc.
• Split, concatenate, and manipulate PDF pages
• Automate filling out of PDF forms
• Add digital signatures to a PDF file
• And much more...

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Scribus - Open Source Desktop Publishing

Scribus is an Open Source program that brings award-winning professional page layout to Linux/UNIX, Mac OS X, OS/2 Warp 4/eComStation and Windows desktops with a combination of "press-ready" output and new approaches to page layout. Underneath the modern and user friendly interface, Scribus supports professional publishing features, such as CMYK color, separations, Spot Colors, ICC color management and versatile PDF creation.

Scribus is powerful software that helps you create great looking documents of all kinds. It also comes with a lot of support options to help you achieve the best result. There is an enthusiastic and friendly community around Scribus that assists beginner and pro alike through our mailing list, IRC channel, wiki, contracted support, and the bugtracker.

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Ghostscript

Ghostscript is a package of software that provides:

• An interpreter for the PostScript (TM) language, with the ability to convert PostScript language files to many raster formats, view them on displays, and print them on printers that don't have PostScript language capability built in;
• An interpreter for Portable Document Format (PDF) files, with the same abilities;
• The ability to convert PostScript language files to PDF (with some limitations) and vice versa; and
• A set of C procedures (the Ghostscript library) that implement the graphics and filtering (data compression / decompression / conversion) capabilities that appear as primitive operations in the PostScript language and in PDF.

Ghostscript is written entirely in C, with special care taken to make it run properly on a wide variety of systems, including MS Windows, Apple MacOS, the wide variety of Unix and Unix-like platforms and VMS systems.

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