LanTopoLog - Download

The unregistered version has full functionality for testing and evaluation but some features work for a limited time

Download portable LanTopoLog 2 2.53.12 (lantopolog253.zip size: 1.70 MB) MD5:f5c6f73bb4a3e946be45c2aa8434737f

Download portable LanTopoLog 2 3.01.0 (lantopolog301.zip size: 1.71 MB) MD5:147bbf1acae8e14423e9ee7b9511b1d7

No installation is required to run the program.
Extract zip file to desired directory, and simply start lantopolog.exe

Version 3.01 requires Java. Supports SNMPv3 authorization protocol up to SHA-512 and AES-256
Download Microsoft portable OpenJDK (microsoft-jdk-25.0.2-windows-x64.zip size: 210 MB)
Extract OpenJDK zip file to any directory. The program will ask you to specify the path to the java.exe file.

Download portable LanTopoLog 2 2.52.9 for Linux (lantopolog252linux.zip size: 4.05 MB) AMD64 MD5:f9494084e9d787d7d176696a921f61eb
Make lantopolog file executable.
The program will ask you to install a package named 'snmp' (Net-SNMP utilities).

LanTopoLog service manager allows to run LanTopoLog as Windows service
Download LanTopoLog service manager (ltl_svc_mgr.zip size: 0.6 MB)

Updating the program

All updates are free.
Extract downloaded zip file to any directory.
Replace the old lantopolog.exe file with the new one.

Version history

Version 3.01  (26-03-2026) - Supports SNMPv3 authorization protocol up to SHA-512 and AES-256
Version 2.53  (17-12-2025) - The process of collecting SNMP data (step 2) is faster
Version 2.52  (08-07-2025) - Fixed some minor bugs
Version 2.51  (21-01-2024) - Notification can be sent to Syslog server
Version 2.50  (15-01-2023) - Remote control via a web browser
Version 2.49  (04-07-2022) - Export network diagram to Draw.io/Diagrams.net
Version 2.48  (22-03-2022) - You can edit the topology map. Export network diagram to PDF
Version 2.47  (12-01-2021) - Show traffic charts for the last 24 hours. Switch list display serial numbers.
Version 2.46  (24-08-2020) - The ability to correct only a part of the network map without doing a full scan
Added code signing
Version 2.45  (27-06-2020) - You can add a new switch to the map without doing a full scan
Version 2.44  (17-03-2020) - Added Port Status Monitor. Custom icons for devices.
Version 2.43  (06-07-2019) - Display the Spanning Tree Status and STP events
Version 2.42  (15-05-2019) - Show access points. Monitoring port bandwidth usage.
Version 2.41  (21-08-2018) - Added support for SNMP Version 3
Version 2.40  (06-06-2018) - LanTopoLog can be run as service