Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Doczilla - Effortlessly create stunning PDFs and screenshots. Seamlessly store them in your own AWS or Google Cloud Storage bucket, putting the control and creativity right at your fingertips.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
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