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.
DesignMunk - Landing Page Inspirations
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
SiteSee - Curated gallery of beautiful, modern websites.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
UI Movement - The best UI design inspiration, daily