PostScript

Adobe PostScript - The official site of PostScript, with resources, information, and links.
www.adobe.com/products/postscript/

Adobe PostScript Language Specifications - Official specification of the core data format/language and of several of its extensions, specification errata and supplements. Hosted by the Adobe Solutions Network.
partners.adobe.com/public/developer/ps/index_specs.html

Adobe PostScript SDK Archive - A compilation of documents and sample code previously distributed on CD as the Print Technologies software development kit.
partners.adobe.com/public/developer/ps/sdk/index_archive.html

Don Lancaster's PostScript Library - Essays and examples on PostScript programming.
www.tinaja.com/post01.asp

Examples from the Blue book - Excerpts covering basic graphics, printing text, applications, and modifying and creating fonts.
www.science.uva.nl/~robbert/ps/bluebook/

Luc Devroye's PostScript Page - Links to various Resources.
cg.scs.carleton.ca/~luc/postscript.html

PostScript and GhostScript Resources - Links to general information, utilities, and software.
www.geocities.com/SiliconValley/5682/postscript.html

PostScript Books - Lists a couple of Adobe and third-party publications.
pages.cs.wisc.edu/~ghost/doc/books.htm

PostScript Language Reference - Complete list of PostScript operators, operands, and symbols. Also features a PostScript troubleshooting section, information on document structuring conventions, the OpenPress Interface (OPI) specification, and a list of books.
atrey.karlin.mff.cuni.cz/~milanek/PostScript/Reference/

PostScript Language Referenz - Includes, third edition.
www.capcode.de/help/

PostScript Manual - David Maxwell's introduction to programming in PostScript.
www.ugrad.math.ubc.ca/localdoc/Flat/PS-toc.html

PostScript Processing Speed Test - Benchmark for PostScript printers.
www.gaaj.com/ppst/

Richard's PS Junk Page - PostScript news, downloads, documentation.
web.ncf.ca/cj434/

Thinking In PostScript - Glenn Reid's book, generously made available in PDF format.
www.rightbrain.com/pages/books.html

Wikipedia: PostScript - Encylopedia article about the language and document format.
en.wikipedia.org/wiki/PostScript