Tealium

Tealium is another option for tagging and tracking user behaviour, ensuring those who visit your site and engage with your content are processed in a data-focused way. The application runs in the cloud to create a data layer to the web experience, tracking as much as the parameters you set possible about visitors and customers on your site. From this data, you can start to build up better ideas of how to streamline and optimise conversions, while getting a meaningful set of engagement data for personalisation. The net effect of this type of data driven marketing can be significant, and with Tealium, it’s straightforward to implement in your current business.

http://www.tealium.com