A system for visualizing and navigating network data may include at least one computing device that receives input data using a NetTree application. The NetTree application may parse the input data and determine a list of nodes in a network and a list of links between nodes in the network from the input data. One of the nodes may be selected as a start node and inserted into a line of a network tree. After selecting the start node, the NetTree application may iterate through each of the links between the nodes in the network and add each new node that is not yet added to the network tree to a list of nodes to check for their links. Each link is added to a line in the network tree. A graphical user interface (GUI) may display the network tree.