Apache is a free and open-source cross-platform web server software.
Google Ads Conversion Tracking is a free tool that shows you what happens after a customer interacts with your ads.
Open Graph is a protocol that is used to integrate any web page into the social graph.
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.