1)   LANsurveyor 10.0
LANsurveyor automates network documentation and reporting. Using multiple discovery methods, LANsurveyor cross-correlates the data and creates advanced topology maps. Diagrams feature Layer 2 and Layer 3 connectivity and export to Microsoft Visio.
network monitoring, topology, mapping, real time, discovery, hardware, software, level 2, level 3, Intrusion Detection,

 2)   LanTopolog 1.08
Provides automatic physical network topology discovery, network map visualization, detailed and searchable physical network topology map, monitoring device's state in real-time, ability to auto-discovery new devices, web browser-based access
freeware, utility, automatic, physical, network, map, topology, discovery, visualization, monitoring,