Judge.me - Product reviews with free photos & videos for social proof
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
Spacetime - Work hour and time zone management for distributed teams.
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.
WhatCX Free - The world's first free CRM on WhatsApp Cloud API
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request