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