TrioSoft Quantum - Quantum, a full featured debt collection agency software suite, Quantum has been designed with the debt collector's needs in mind.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
CSS Impact - Industry leaders in Financial Systems for Credit Granting, Billing, Payments, Receivables, Contacts, Collections, Legal, Compliance & Revenue Management.
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
Cforia.autonomy - Debt Collection
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.