TITLE: -------------------------------------------------------------- Tridimensional and interactive visualization of graphs generated from information extracted from computer networks. ABSTRACT: -------------------------------------------------------------- We present an environment for visualization and navigation of large graphs, focusing on tridimensional layouts. This layouts are applied to graphs generated by the extraction of information from computer networks. The proposed environment is multi-platform, extensible and uses OpenGL graphics library. Figure 1 shows some examples of visualization models seen in this environment. The proposed environment was tested and evaluated on the PUC Minas academic network.