NewspaperSoftware.com

PDF Converter
Submit documents online to be returned as PDF.
www.pdfconverter.com/

PDF Research Companion
A designer's guide to the Portable Document Format. Provides links, resources, articles, case studies and more on Acrobat, Capture and FrameMaker.
www.performancegraphics.com/

PDF on the Fly
Perl5 library for creating PDF files. Free for personal use, and commercial licences can be arranged.
www.eprg.org/

ElegantJ PDF Library
A Java class library that enables publish reports and documents in PDF format from application. [Commercial]
www.elegantjbeans.com/

Big Faceless PDF Library
Create PDF documents with include full Unicode support and TrueType and Type 1 font embedding. [Commercial w/ Evaluation]
big.faceless.org/

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

PDF.Net
A cross-platform PDF library used to read, write and edit PDF documents. Available as a .Net component and as a C++ library. By pdfTron.
www.pdftron.com/

JPEDAL (Java Pdf Extraction Decoding Access Library)
An library for rasterizing and extracting content from PDF files in Java. [Open source, LGPL]
www.jpedal.org/

Siberix PDF Library
Create industry standard PDF files.
www.siberix.com/

Online PDF to HTML Conversion
Web form translating arbitrary PDF files to HTML, hosted by Adobe. Designed specifically to make PDF accessible to people with disabilities.
www.adobe.com/