Ghostery: A comprehensive free user friendly privacy web tool
Ghoserty is a free browser extension that track webpage scripts and inform the users about the scripts that opened webpage is using in real time.
Ghostery tracks all the scripts through its special designated trackers and give user detail report about the script of a particular webpage or website.
For a web user it is a very good plugin to get the information about used web scripts in website so that they will feel safe while browsing a particular website, whereas for a Developer it is highly useful to figure out see which website uses which scripts. All in all Ghostery is a website knowledgebase aggregator.
Ghostery browser extension is available for all modern and popular web browser like Google Chrome, Mozilla Firefox, Apple Safari, MS Internet Explorer etc. Apart from being a browser extension Ghostery is also available as an independent App for popular mobile platform like iOS and Android.