SEOToolSet - SEOToolSet provides quality search engine optimization (SEO) tools and SEO training for professionals. Promotes ethical practices. Software support included
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Slash Media - Slashdot Media is the global leader in professional technology communities and reaches a worldwide audience of over 42 million IT professionals and enthusiasts.
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
Working Planet - Search engine marketing solution.
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.