PayPal Credit - PayPal Credit provides financing options to businesses.
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
Sezzle - Sezzle is a digital payment platform designed to help shoppers manage their financial futures with great ease.
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.
Klarna - Klarna provides e-commerce payment solutions for merchants and shoppers.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request