WiR3D is the project to build NMS with GTK GUI. The name should be pronounced like 'wired' and it comes from the combination of Wire and 3D,
as it has a feature to draw a three-dimentional topology layout of wired or wireless LAN (see the screenshots).
Most of the currently available free solutions offer only web interface which is good just for a remote access. The arguments for an NMS program with application GUI are: