An information storage unit stores pieces of information that are classified on the basis of their relationships. An information providing unit provides a client terminal with information stored in the information storage unit via a communication network in response to an access request from the client terminal. An access frequency acquiring unit acquires access frequencies, for respective classification items of the pieces of information, of accesses to the pieces of information. An information generating unit generates prescribed information so that pieces of information of plural classification items will be displayed in the client terminal in such a form as to be based on histories of the access frequencies.