RetailMenot - The RetailMeNot mobile app allows you to find deals on the go for both online shopping and in store shopping.
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
Dealspotr - Dealspotr is like Wikipedia for deals.
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.
Honey - Honey is a browser extension that automatically finds and applies coupon codes at checkout with a single click.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request