CmapTools is concept mapping software developed by the Florida Institute for Human and Machine Cognition (IHMC).
[1] It allows users to easily create graphical nodes representing concepts, and to connect nodes using lines and linking words to form a network of interrelated propositions that represent knowledge of a topic.
Multiple links can be added to each concept to form a dynamic map that opens web pages or local documents; The links added receive a category chosen by the user on the provided list of types, to help with organization, some categories are: URLs; Documents; Images; and so on.
The links are stacked by each category type under the chosen concept form (like show on the image sideway).
Multiple maps connected can form a knowledge base, for example of a company structure, repository of standards, personal contacts and other important general information.