Paperplane converts web pages to PDF documents. PDFs are rendered using Google Chrome, so the latest web standards can be used to author source documents. The API also allows you to convert multiple documents in parallel, and automatically uploads PDFs to cloud storage.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
NotePlan - Make plans inside an individual markdown note for every day in your calendar. Use it as a journal for your daily tasks and plan todos in advance. For Mac, iPhone and iPad.
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
markdown to web - Convert markdown to online web page
HTMLEmail.io - Responsive HTML email templates for startups & developers
Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.