HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.

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.

FFmpeg - Open source multimedia suite for conversion, playback, profiling, and streaming.

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

Xilisoft Video Converter - Xilisoft Video Converter is easy, fast, reliable, and loaded with features.

PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request