A component management device according to an embodiment includes a database, a component searching unit, and a component operating unit. In the database, components are registered. Input-output of each component is defined for type of the component. The component searching unit receives input of the names, or the input examples, or the evaluation data of components; searches for the components registered in the database, according to the input; and presents the search result. The component operating unit sends the input from an application, which uses the searched component, to a component and sends the output of the component to the application.