AlpsAgency.com

Acrobat 5.0 SDK Documentation
Official guide to PDF SDK documentation, part of the Adobe Solutions Network developer program. Introductions to the PDF document format, to the SDK, and to type technology, knowledge base articles, and technical notes.
partners.adobe.com/

PDFzone Acrobat PDF Ring
Connects sites showcasing uses of Adobe Acrobat files.
e.webring.com/

PDF Creator
Sells the 5-Minute PDF Creator, an Adobe Acrobat tutorial and self-publishing guide.
pdfcreator.com/

Guru's Lair: Acrobat PDF and SVG Graphics Library
Tutorials and utilities to help use Adobe Acrobat version 4 and above.
www.tinaja.com/

Text Into PDF
A DLL allows to programmatically convert any string of text, or a text-based file into PDF format. [Commercial]
www.txtn2pdf.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/

Creating PDF Documents for Free
Links to free Web services, freeware applications, and Open Source programs generating PDF files from a variety of other formats. Aimed mainly at Microsoft Windows users.
www.pruittfamily.com/

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

All PDF
French company with Mac and Windows PDF tools.
www.allpdf.com/

PDF Research Companion
Description of PDF, how-to instructions for its use, additional resources supporting PDF, a comparison of PDF to PostScript, and links to related sites.
www.performancegraphics.com/