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
Apptivo CRM - CRM for managing customer accounts
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.
Goldmine CRM - Goldmine CRM is a Customer Relationship Management software that helps you build and manage your contact list, send follow-up emails, track your results and build better customer relationships using customer data and insights.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
YetiForce CRM - Yetiforce helps companies best utilize free professional opensource CRM to lower costs and improve performance throughout the entire communication structure.