PHP::PRINT::IPP (or PHP PrintIPP) is a set of PHP 5 classes that implements an IPP (Internet Printing Protocol) client. It is able to converse with an IPP print server to print both strings and files and to cancel jobs, as well as perform all other RFC2911 operations. It can handle connections to the Internet Printing Protocol (IPP) server via HTTP, HTTPS, or Unix sockets. There is also a command line interface, phpprintipp, which performs various operations (currently printing and fetching jobs and printer info) on a given IPP printer.
PostScript::CDCover generates a Postscript program that prints a CD cover and backlabel, with contents displayed as a tree of directories and files. The module ships with a stand-alone, ready-to-use script, pscdcover, that takes the directory tree of a CD-ROM as input and generates a cover from it. The output can be directly fed to a PostScript printer, but it is designed to be easily editable (should one wish to remove unwanted directory entries, for example).
xhtml2pdf converts HTML/XHTML/XHML to PDF using the ReportLab Toolkit, the HTML5lib, and pyPdf. It supports HTML 5 and CSS 2.1 (and some of CSS 3). The main benefit of this tool that a user with Web skills like HTML and CSS is able to generate PDF templates very quickly without learning new technologies.
Tea4CUPS is similar in functionality to the *nix command "tee", but in the form of a CUPS (Common UNIX Printing System) backend. Tea4CUPS captures a print job's data in their final form while they are being sent to a printer (more precisely, to a CUPS backend), and at the same time allows you to dispatch these data to any number of commands.
GL2PS is a C library providing high quality vector output for any OpenGL application. It uses sorting algorithms capable of handling intersecting and stretched polygons, as well as non manifold objects. It provides advanced smooth shading and text rendering, culling of invisible primitives, mixed vector/bitmap output, and much more. It can currently create PostScript (PS), Encapsulated PostScript (EPS), Portable Document Format (PDF), and Scalable Vector Graphics (SVG) files, as well as LaTeX files for the text fragments.