tracker2: Tracker (semantic data storage search engine) tracker2: tracker2: Tracker is a search engine and that allows the user to find their tracker2: data as fast as possible. Users can search for their files and search tracker2: for content in their files too. Tracker is a semantic data storage tracker2: for desktop and mobile devices. Tracker uses W3C standards for RDF tracker2: ontologies using Nepomuk with SPARQL to query and update the data. tracker2: Tracker is a central repository of user information, that provides tracker2: two big benefits for the desktop; shared data between applications tracker2: and information which is relational to other information (e.g. mixing tracker2: contacts with files, locations, activities and etcetera).