A link management device, concerning development management data utilized by each of a plurality of development management systems included in a tool chain system, manages a link between items of the development management data. A link registration unit executes crawling of acquiring, from each of the plurality of development management systems, information of the development management data including naming information indicating naming of the development management data. Then, based on the information of the development management data, the link registration unit transmits a link registration instruction for registering the link between the items of the development management data to the plurality of development management systems. Then, the link registration unit records the link between the items of the development management data, as link record information.