Download Subnetlens
Subnetlens gives Windows users a complete picture of their local network. It discovers devices across subnets, identifies each one through an extensive pattern database, and presents everything on an interactive topology map. Built-in diagnostic utilities cover the common tasks an administrator performs daily, from connectivity checks to certificate inspection, without requiring additional software installations. All processing occurs on the local machine.
The app stores scan results, credentials, and device data exclusively on the user's computer. License activation requires a single internet connection, after which the software operates fully offline. A free tier provides scanning, mapping, classification, and eight essential tools. A one-time Pro purchase unlocks monitoring, scheduling, reporting, SNMP support, and the full toolkit of twenty-six utilities across three to twenty-five computers.
Subnetlens suits managed service providers, internal IT teams, and enthusiasts who maintain home labs. It runs on Windows 10 and 11, installs in under a minute, and avoids server infrastructure entirely. Custom builds and tailored features are available for organizations with specific workflow requirements. The pricing model replaces recurring subscription fees with a perpetual license that includes one year of updates.
| CIDR range enumeration via multi-stage discovery pipeline | Combines ARP, ICMP and banner collection in configurable steps |
| Visual topology rendering of observed network relationships | Displays device nodes and physical links derived from SNMP |
| Heuristic device typing using numerous classification signals | Assigns roles from ports, banners, hostnames and fingerprints |
| Real-time event timeline with tactical visualization canvas | Detects appearing and disappearing hosts as changes occur |
| Continuous multicast listening capturing transient device broadcasts | Fills gaps between scheduled scanning cycles |
| Temporal port state tracking revealing service changes | Records opened and closed ports across scan history |
| User-defined port monitoring with state change alerting | Reports watched ports without mislabeling unscanned entries |
| Risk scoring with TLS and banner analysis | Matches service fingerprints against known vulnerability signatures |
| Context-aware device actions with integrated launchers | Provides RDP, SSH and diagnostic connection shortcuts |
| Locally encrypted credential storage with import capability | Auto-fills authentication prompts without cloud synchronization |
| Cron-based scheduling with webhook result delivery | Automates recurring scans with failure retry handling |
| SNMP-derived physical connection mapping and statistics | Correlates switch ports with observed MAC addresses |
| Metrics endpoint compatible with monitoring stacks | Exposes device counts and scan durations for scraping |
| Keyboard-driven fuzzy navigation across application functions | Enables rapid device lookup and action execution |
| Collection of diagnostic utilities with streaming output | Provides network troubleshooting tools within single interface |
| Address allocation tracking distinguishing usage states | Structures subnet management across reserved and dynamic ranges |
| Documentation generation suitable for audits and stakeholders | Exports inventories and findings in structured formats |
| Embedded command execution contextualized to selected device | Eliminates window switching during administrative tasks |
| Background polling service feeding continuous event streams | Monitors network activity from system tray persistently |
| Saved scan configurations reusable across different networks | Maintains multiple profiles for distinct environments |