Arts PDF
- Developers of acrobat plugins and tools for creating layers, increasing form usability, color production printing, image editing. Details of products and demos to download.
- http://www.artspdf.com/

PDFedit
- Free editor for manipulating PDF documents, with command line and graphical interfaces. Includes news, screenshots, and download.
- http://pdfedit.petricek.net/

PDFjam
- Shell scripts that provide a command-line interface to the pdfpages package for pdfLaTeX. Download and description of the functions to allow the joining (pdfjoin), rotating (pdf90) and n-up-ing (pdfnup) of PDF files.
- http://www2.warwick.ac.uk/fac/sci/statistics/staff/academic/firth/software/pdfjam/

Enfocus Software
- Detrails of the PDF and PostScript tools available.
- http://www.enfocus.com/

Broadgun Software Pty Ltd.
- pdfMachine produces quality PDF files. Features include multilingual font support, editing capabilities, and integrates with MAPI compliant mail programs.
- http://www.broadgun.com/

Guaranteed PDF Decrypter
- A utility to decrypt password-protected PDF files with guarantee, regardless of password used. Demo available. [windows, linux, Solaris]
- http://www.guapdf.com/

Visual Software Laser Printing Solutions
- LaserJet PCL printing, viewing and conversion software, PC and Unix. Pcl2pdf, Forms Electric.
- http://www.visual.co.uk

Panda PDF Generator
- Panda is an open source PDF generation API.
- http://www.stillhq.com/panda/

WebSuperGoo - AbcPDF and ImageGlue
- Create Adobe PDF documents from ASP, ASP.NET, VB or any environment that supports ActiveX. Add text, images and graphics.
- http://www.websupergoo.com/

SANFACE Software
- Developers of perl conversion to PDF utilities, including txt2pdf, txt2pdf PRO, jpg2pdf, jpg2pdf, data2pdf products.
- http://www.sanface.com/

R&OS
- PHP pdf Class, which allows the production of simple pdf documents...
- http://www.ros.co.nz/pdf/

PS2PDF.com
- Free online Postscript to Acrobat file converter. It uses AFPL Ghostscript to converts a user supplied Postscript file to PDF file. Provides FAQs, help files.
- http://www.ps2pdf.com/

PrintToPDF
- Shareware Macintosh printer driver that creates PDF files.
- http://www.jwwalker.com/pages/pdf.html

PDFlib
- An ANSI C library to dynamically generate PDF files.
- http://www.pdflib.com/

PDF ePrinter
- Application for PowerPC-based Macintosh that converts spooled print jobs into a Portable Document Format (PDF) file.
- http://homepage.mac.com/mdsw/

PDF Online
- Converts documents into PDF format, and PDF documents into a number of other formats for free.
- http://www.pdfonline.com/

llionsoft
- llPDFLib is an Object Pascal library for creation of PDF documents.
- http://www.llion.net/

FPDF
- Provide a PHP class, which allows to generate PDF files without using the PDFlib library.
- http://www.fpdf.org/

Adobe Acrobat Family
- Adobe's product guide for their ePaper solutions, including Acrobat product guide, technologies, third-party plugins, Acrobat Reader for Palm OS, and server solutions.
- http://www.adobe.com/products/acrobat/

Apago
- Software to create, manipulate and optimize PDF files.
- http://www.apagoinc.com

Create Adobe PDF Online
- Online service from Adobe, which allows users to upload files and have them converted. Free trial, then monthly subscription required.
- https://createpdf.adobe.com/

Appligent
- Provides tools for personalizing, stamping, appending, splitting, merging, manipulating, signing and securing PDF files on all leading server platforms. The Redax plug-in provides foolproof redaction of sensitive content from PDF documents.
- http://www.appligent.com/

Pdftk
- A software toolkit which performs a range of manipulations on PDF files. List of features, example useage, and downloads for several platforms. Open source GPL licence.
- http://www.accesspdf.com/pdftk/

CABAReT
- Java PDF reader.
- http://www.cabaret-solutions.com

Adult PDF
- PDF conversion and manipulation tools.
- http://www.adultpdf.com/

FontWorld
- Adobe software for Middle Eastern languages.
- http://www.fontworld.com/

Foxit Software Company
- PDF Editor and compact reader.
- http://www.foxitsoftware.com

PDF Tools AG
- Command line tools and library APIs for document conversion and manipulation. Also provide toolkits for encryption, form filling and flattening, imaging, merging, splitting, information retrieval, content construction, image conversion.
- http://www.pdf-tools.com

Altsoft
- .NET frameworks for XML data formatting and font editing.
- http://alt-soft.com/

Affordable PDF Tools
- Merge, split or alter PDF files.
- http://www.a-pdf.com

Create a PDF
- Free instructions for creating Acrobat PDF documents as well as general information on PDF's.
- http://www.createapdf.com/

BinaryThing
- Provides a forum for PDF users and developers, custom programming product details, and online software store.
- http://www.binarything.com/

WinCE PDF Viewer
- PDF viewer for mobile devices running on Windows CE platform, that allows viewing PDF files, annotate documents, create bookmarks, view pictures (TIFF, JPEG, GIF, PNG), and open eBook documents on a handheld PDA.
- http://www.novosoft-us.com/customers/projects_description_st.shtml?PDFViewer

PDFTron
- Software development and consulting company based in Vancouver, Canada, specializing in PDF, SVG, and PostScript technologies for the graphics and publishing industries.
- http://www.pdftron.com/

FinePrint
- A variety of tools to create and print PDF files.
- http://www.fineprint.com/

Jaws PDF Software
- Developer of PostScript interpreters and PDF software tools and technologies to enable you to convert, write, and deliver PostScript, HTML, images and other documents. PDF creator and server available.
- http://www.jawspdf.com/

Ghostscript, Ghostview and GSview
- An interpreter for the PostScript language and for PDF, and related software and documentation.
- http://www.cs.wisc.edu/~ghost/index.html

xPDF
- A file viewer that runs under the X Window System on UNIX, VMS, and OS/2.
- http://www.foolabs.com/xpdf/

Adobe Acrobat: The Killer App of Online Publishing
- Mike Lee explains why he's in love with Adobe Acrobat as a way to publish in digital format.
- http://www.zinebook.com/resource/adobe.html