GNS3 (Graphical Network Simulator) is a graphical network simulator
that allows simulation of complex networks.

The gns3-gui component is the official graphical user interface
of the project. It acts as the visual front-end (built with Python
and Qt) that allows users to intuitively design, configure,
and manage network topologies using drag-and-drop functionality.

Note: gns3-gui requires gns3-server running in the background
(either locally or remotely) to process and run the nodes and
devices within the topology.