Electron - Build cross platform desktop apps with web technologies
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
NW.js - nwjs
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
DeskGap - Framework for building cross-platform desktop apps with web technologies (JavaScript, HTML and CSS).
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.