mikroC - mikroC is a full-featured ANSI C compiler for 5 different microcontroller architectures. It is the best solution for developing code for your favorite microcontroller
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.
Dcoder - Dcoder is an online compiler, a cloud based IDE for mobile and desktops, where one can code and learn algorithms. Now code, compile, run anytime anywhere.
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
PicCBuilder - an Eclipse plugin for allowing the use of Eclipse CDT
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request