Freedom251 › Network Mapping Software
LanTopoLog
What LanTopoLog is
LanTopoLog discovers and maps physical network connections, then monitors traffic and packet conditions on a local network. Its agentless discovery uses SNMP, and the resulting topology map is searchable and editable. A Switch Port Mapper links physical switch ports with the MAC and IP addresses of attached devices; LanTopoLog states it works with any switch model. Monitoring covers network traffic, invalid packets and dropped packets, with alerts when traffic thresholds are exceeded. Notifications can go by email or Telegram, or to a Syslog server. Reports can be exported to PDF or Draw.io/Diagrams.net. Browser access and remote control are supported, but publishing requires an external web server. The maker says the portable program does not write to the operating system area or send data elsewhere. The Java version supports SNMPv3 authorization up to SHA-512 and AES-256. LanTopoLog is listed for Linux, web and Windows; Linux has limited functionality. LanTopoLog 2 costs $50, paid once for one local network, and the license cannot be renewed. A free plan and free trial are listed.
Who it suits
LanTopoLog suits administrators who need to map and monitor a local network, especially those looking for SNMP-based discovery and switch-port details. Linux users should account for its limited functionality.
What it does well
- Agentless SNMP discovery
- Searchable, editable physical topology map
- Maps ports to attached devices’ MAC and IP addresses
- Traffic alerts via email, Telegram or Syslog
- PDF and Draw.io/Diagrams.net report exports
What to know first
- Topology discovery may miss some connections
- Linux version has limited functionality
- Publishing needs an external web server
- Unregistered version disables features after a time
Limits
The unregistered version disables web publishing, VLAN IDs, traffic charts, and search after some time, and displays demo instead of real data. The Linux version has limited functionality; the listed LanTopoLog 2 license covers one local network and up to three bound switches.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| LanTopoLog 2 | one license · license tied to up to 3 selected switches · unlimited other switches · simultaneous use on multiple computers | $50, paid once |
As lantopolog.com lists them, read 15 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://www.lantopolog.com/.
- Choose a platform: Linux, web, or Windows.
- Use the free plan or free trial, or purchase LanTopoLog 2 for 50.00 USD once.
- Run agentless discovery using SNMP on the local network.
- Use an external web server if you want to publish through the web.
Verdict
LanTopoLog combines physical topology mapping with traffic and packet monitoring, plus export and alert options. Its discovery is not fully reliable, Linux functionality is limited, and web publishing requires an external server.
Questions
How much does LanTopoLog cost?
LanTopoLog 2 is listed at 50.00 USD once for one local network. The license cannot be renewed.
Is there a free plan or trial?
Yes. A free plan and a free trial are listed. The unregistered version disables some features after some time and shows demo data.
Which platforms are supported?
Linux, web, and Windows are listed. The Linux version has limited functionality and some features are missing.
How does LanTopoLog discover network topology?
It uses automatic, agentless SNMP discovery to map physical network topology. Some connections may remain undiscovered because the discovery algorithm is not fully reliable.
Can reports and alerts be sent elsewhere?
Reports can be exported to PDF and Draw.io/Diagrams.net. Alerts can go by email, Telegram, or to a Syslog server.
Does it publish its own web server?
No. Browser access and remote control are supported, but web publishing requires an external web server.
Facts from LanTopoLog's own pages
- Alerts and integrations
- Alerts can be sent by email, Telegram or to a Syslog server. · lantopolog.com, 1 Oct 2026
- Browser access
- Maps and control functions can be accessed through a web browser on the network. · lantopolog.com, 15 Oct 2026
- CGI requirement
- Browser search and remote control require CGI support and the supplied ltsearch.cgi script on the web server. · lantopolog.com, 15 Oct 2026
- CrowdReviews company data
- CrowdReviews lists the vendor as an unverified network-monitoring software provider and leaves founded year, employees and revenue blank. · crowdreviews.com, 15 Oct 2026
- Custom commands
- Device icons provide context menus for custom commands. · lantopolog.com, 15 Oct 2026
- Custom map data
- Import functions let users add custom data to the map. · lantopolog.com, 15 Oct 2026
- Demo limits
- After some time, the unregistered version disables web publishing, VLAN IDs, traffic charts and search, and displays demo instead of real data. · lantopolog.com, 1 Oct 2026
- Discovery
- Automatic physical network topology discovery is based on SNMP. · lantopolog.com, 1 Oct 2026
- Discovery limitation
- The topology discovery algorithm is not 100% reliable and some connections may remain undiscovered. · lantopolog.com, 1 Oct 2026
- Documentation and support
- The site provides a multi-section HTML user manual and asks users to email [email protected] with questions. · lantopolog.com, 15 Oct 2026
- Editable diagrams
- Users can edit the network diagram. · lantopolog.com, 15 Oct 2026
- Exports
- Network reports can be exported to PDF and Draw.io/Diagrams.net. · lantopolog.com, 15 Oct 2026
- Failure alarms
- It generates alarms for network failures. · lantopolog.com, 15 Oct 2026
- G2 review volume
- G2 says there are not enough LanTopoLog reviews to provide buying insight. · g2.com, 15 Oct 2026
- Independent publisher listing
- Sooftware lists Yuriy Volokitin as the publisher and describes LanTopoLog as free automatic physical network-topology discovery and map-visualization software. · sooftware.com, 15 Oct 2026
- Installation model
- Windows can run directly from an extracted archive without installation; Linux requires making the binary executable and installing Net-SNMP utilities. · lantopolog.com, 15 Oct 2026
- Latest listed release
- Version 2.53j dated 26 March 2026 adds SNMPv3 authorization support up to SHA-512 and AES-256. · lantopolog.com, 15 Oct 2026
- Licence
- The homepage classifies LanTopoLog 2 as shareware and the copyright notice says all rights are reserved. · lantopolog.com, 15 Oct 2026
- Limit: switch-bound licensing
- A G2 reviewer complained that replacing all three switches bound to a license requires buying a new license. · g2.com, 15 Oct 2026
- Maker identity
- The official copyright identifies Yuriy Volokitin as the maker. · lantopolog.com, 15 Oct 2026
- Monitoring
- It monitors network traffic, invalid packets and dropped packets and can notify administrators when traffic thresholds are exceeded. · lantopolog.com, 1 Oct 2026
- New-device alerts
- The software detects new network devices and can notify administrators. · lantopolog.com, 15 Oct 2026
- Notifications
- Notifications can be sent by email, Telegram and Syslog. · lantopolog.com, 15 Oct 2026
- Operating systems
- The maker lists Windows and Linux requirements; a Linux download is provided for AMD64. · lantopolog.com, 15 Oct 2026
Where LanTopoLog stands on Freedom251
- Network Mapping Software#3 of 21
- Network Discovery Software#6 of 35