Wetty - Terminal over HTTP and HTTPS.
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
Shell In A Box - Shell In A Box is a web based AJAX terminal emulator that can export arbitrary command line tools...
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.
Bastillion - Bastillion is an open-source web-based SSH console that centrally manages administrative access to systems.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request