wkhtmltopdf - wkhtmltopdf is an open source (LGPL) command line tools to render HTML into PDF and various image...
Spectre.css - Lightweight, responsive and modern CSS framework for faster and extensible development.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Wing-project.org - WING - Wireless Mesh Network for Next-Generation Internet
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
Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.