Wikipedia
Brandwatch
Brandwatch is a social media monitoring company headquartered in Brighton, England. Brandwatch is a "self-serve application" or software as a service, which archives social media data in order to provide companies with information and the means to track specific segments to analyse their brands' online presence.
The tool's coverage includes blogs, news sites, forums and social networks such as Twitter and Facebook. Users can search data, and use charting, categorisation, sentiment analysis and other features to provide further information and analysis. Brandwatch has access to over 80 million sources.