The latest freeware version:    LanTopolog version 1.29

The latest shareware version: LanTopolog 2 version 2.12

Author:     Yuriy Volokitin 

System Requirements:   Windows 2000/XP/2003/2008/Vista/7

Key features

- Automatic physical network topology discovery based on SNMP
- Provide detailed and searchable physical network topology map
   so you can quickly isolate network connectivity failures
- Topology views show which network devices are connected to each switch port;
   port connections are labeled with port numbers
- Ability to auto-discovery new devices at they are added to your network
- LanTopolog also includes network monitoring tools
- Monitoring device's state (active/inactive) in real-time using ICMP
- Generating alarms when there are failures in the network
- E-mail alerts notifying
- Web browser-based access from anywhere in the network
- Easy-to-use interface

Shareware version LanTopolog 2 has additional features

- Improved algorithm for network topology discovery
- Number of network segments is not limited
- More rapid detection of new computers in the network
- Export switch connection table to csv file
- Export computer list to csv file
- Show switch port speed
- Network traffic monitoring
- Notify the administrator when traffic thresholds exceeded

Feel free to email me any errors or comments to   support@lantopolog.com