Apache is a free and open-source cross-platform web server software.
cdnjs is a free distributed JS library delivery service.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Pinterest is an image sharing and social media service designed to enable saving and discovery of information.
Silverstripe CMS is a free and open source Content Management System and Framework for creating and maintaining websites and web applications.