pdfposter can be used to create a large poster by building it from multple pages and/or printing it on large media. It expects as input a PDF file, normally printing on a single page. The output is again a PDF file, maybe containing multiple pages together, thus building the poster. The input page will be scaled to obtain the desired size. This is much like poster does for Postscript files, but works with PDF instead, since sometimes poster does not like your files converted from PDF. Indeed, pdfposter was inspired by poster.
Post Scriptum is a programming language for preparing PostScript documents and programs. The language is procedural, and uses classical control structures (functions, loops, and conditional statements) and commonly known data types (numbers, arrays, strings, and dictionaries). Its syntax is simple, clear, and easy to learn. The compiler translates programs written in Post Scriptum directly to a PostScript file, which can be than executed by a PostScript interpreter (such as Ghostscript), printed, or used as a procset, driver, or library.
Print Release System provides Web-based management of System V printing. It sits between Samba and the System V printing system. It ought to be relatively easy to make it work with other printing systems. After the job is printed, the user needs to consult a Web page that shows their queued jobs, which can be selected and released for printing (or canceled). A record is maintained for each job and, once the user reaches a quota, they can't release any further jobs to the printer.