Have I Been Sold? - Check if your email address was sold without permission
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.
Optery - See the private info data brokers post about you online
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
Creep Alert - Check if friends or colleagues track you via email
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request