FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.
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
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
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.