An apparatus for presenting information of document files, the document files being stored on a document database where the document files are categorized and stored into any of predefined category bins, the apparatus includes: a selecting section that selects at least some of document files stored on the document database and categorized in object category bins as representative document files for each of the object category bins, the object category bins being at least part of the category bins; and a presenting section that presents information relating to the selected representative document files to a user.