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.
MKVtools - MKVtools was primarily designed for processing mkv files for use in DivX enabled DVD players...
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
MKVToolnix - MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices...
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
MKV Video Converter - Best MKV video converting software to download online videos from YouTube, Facebook, Twitter, etc.