LanTopoLog - Download

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

Download portable LanTopoLog 2 2.53.13 (lantopolog253.zip size: 1.70 MB) MD5:31f7879488b10706de55d98a5f709744

Download portable LanTopoLog 2 3.01.0 (lantopolog301.zip size: 2.68 MB) MD5:44d894cba76d72037e49f31a2413f4f4
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.

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

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.
Copy the contents of the old folder ...\Lantopolog2\ to 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