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.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
PHP is a general-purpose scripting language used for web development.
Pinterest is an image sharing and social media service designed to enable saving and discovery of information.
SWFObject is an open-source JavaScript library used to embed Adobe Flash content onto web pages.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.
Wufoo is an online form builder that creates forms including contact forms, online payments, online surveys and event registrations.