W3C mobileOK Checker : This checker performs various tests on a Web Page to determine its level of mobile-friendliness.
Paged.js : Paged.js is a free and open source JavaScript library that paginates content in the browser to create PDF output from any HTML content. This means you...
Email Standards Project : The Email Standards Project is about working with email client developers and the design community to improve web standards support and accessibility ...