Vulnerability scans and network hardening both start from the same question: what is actually connected to the network? For a home lab that grew from three devices to thirty, or a small office where nobody wrote down which printer is where, a proper local network inventory closes the biggest blind spot in a security workflow. These are the seven best desktop apps for local network inventory we would install on Windows, macOS, or Linux in 2026.
The list mixes classic on-demand scanners with agent-less monitoring tools that keep a running record of what came and went. Every pick runs entirely on the local desktop or server and does not require you to trust a third-party cloud with your LAN map.
What to look for in a local network inventory app
- Discovers devices without requiring an agent on every host
- Identifies the vendor and OS with reasonable accuracy from MAC and fingerprints
- Alerts on new devices joining the network (or at least logs them)
- Exports the inventory to CSV or an API you can automate against
- Works on the largest network you actually run, not just a demo LAN
Quick comparison
| App | Best for | Free plan | Paid tier | Rating |
|---|---|---|---|---|
| Angry IP Scanner | Cross-platform fast scans | Fully free open source | None | Very high |
| Advanced IP Scanner | One-click Windows inventory | Fully free | None | High |
| Fing Desktop | Home network with alerts | Fully free basic | Fing Premium | High |
| Nmap Zenmap | Deep scans with topology | Fully free open source | None | Very high |
| Lansweeper | Small business asset inventory | Free up to 100 assets | Lansweeper paid tiers | High for offices |
| NetAlertX | Self-hosted always-on scanner | Fully free open source | None | Solid |
| Domotz | Cloud-managed monitoring | Trial | Domotz subscription | Solid |
1. Angry IP Scanner – best cross-platform fast scan
Angry IP Scanner is the small, fast, cross-platform scanner most engineers keep in their tool folder. It walks a subnet, resolves hostnames, checks common ports, and exports the result to CSV or XML in seconds. On Windows, macOS, or Linux the interface is the same.
Where it falls short: No continuous monitoring; each run is a snapshot. No CVE checking; use a real scanner alongside.
Pricing:
- Free: Fully open source
- Paid: None
Platforms: Windows, macOS, Linux
Download: angryip.org
Bottom line: The default cross-platform quick inventory scanner.
2. Advanced IP Scanner – best one-click Windows inventory
Advanced IP Scanner is the Windows-first tool many IT admins default to. Scans return device names, MAC addresses, vendors, and shared resources, with a right-click menu to remote-in or wake-on-LAN a discovered host. The workflow feels built for the daily reality of a small IT setup.
Where it falls short: Windows only. Some right-click actions expect the local user to have admin rights on the target.
Pricing:
- Free: Every feature
- Paid: None
Platforms: Windows
Download: advanced-ip-scanner.com
Bottom line: The right pick for a Windows-based home lab or small office.
3. Fing Desktop – best home network with alerts
Fing Desktop is the desktop companion to the popular Fing mobile app. Continuous scanning identifies devices, alerts on new joiners, and (with Premium) checks for known vulnerabilities on discovered hosts. For a home network with kids and IoT sprawl, the always-on posture is the point.
Where it falls short: The best features (vulnerability alerts, digital fence, internet outage alerts) sit behind Premium. Requires a Fing account.
Pricing:
- Free: Basic inventory and alerts
- Paid: Fing Premium subscription
Platforms: Windows, macOS, Linux
Download: fing.com/products/fing-desktop
Bottom line: The right pick for continuous home-network monitoring.
4. Nmap Zenmap – best deep scans with topology
Nmap Zenmap is the graphical front end for Nmap, and it adds a topology view that maps how discovered hosts sit relative to each other. For anyone who already leans on Nmap for scanning, Zenmap is the free way to hand a report to someone who does not want to read raw XML.
Where it falls short: Zenmap has been through community rewrites; the modern build is usable but not as polished as commercial GUIs.
Pricing:
- Free: Fully open source
- Paid: None
Platforms: Windows, macOS, Linux
Download: nmap.org/zenmap
Bottom line: The right pick when the inventory needs to double as a topology map.
5. Lansweeper – best small business asset inventory
Lansweeper goes beyond IP-level scanning to build a real asset inventory: hardware specs, installed software, licensing, and warranty status. The free tier covers up to 100 assets, which is enough for a small office. It runs on Windows Server or in Docker.
Where it falls short: Steeper setup than a plain scanner. Some features gated to paid tiers.
Pricing:
- Free: Up to 100 assets
- Paid: Lansweeper paid tiers
Platforms: Windows, Linux (Docker)
Download: lansweeper.com
Bottom line: The right pick when the inventory needs to include installed software and warranty data.
6. NetAlertX – best self-hosted always-on scanner
NetAlertX (formerly Pi.Alert) is the open-source, self-hosted alternative to Fing Desktop’s continuous monitoring. Run it in Docker on a Pi or a home server and it scans on a schedule, alerts on new devices, and logs the history. No account, no cloud, no subscription.
Where it falls short: Setup is Docker-first; not a click-and-run installer. UI is functional rather than polished.
Pricing:
- Free: Fully open source
- Paid: None
Platforms: Linux, Docker
Download: github.com/jokob-sk/NetAlertX
Bottom line: The right pick for a self-hosted always-on scanner without a subscription.
7. Domotz – best cloud-managed monitoring
Domotz is the pick when the network to inventory belongs to a client and the technician sitting behind the desktop is remote. Continuous monitoring runs on a local agent, and the desktop or web UI surfaces the inventory from anywhere. Not free, but priced for IT service providers rather than enterprise.
Where it falls short: Cloud dependency. Priced per network monitored.
Pricing:
- Free: Trial
- Paid: Domotz subscription per site
Platforms: Windows, macOS, Linux (agent); web UI
Download: domotz.com
Bottom line: The right pick when you manage several networks remotely.
How to pick the right one
- If you want a quick snapshot: Angry IP Scanner or Advanced IP Scanner
- If you want continuous monitoring at home: Fing Desktop or NetAlertX
- If the inventory needs installed software and warranties: Lansweeper
- If you want to hand someone a topology map: Zenmap
- If you manage several networks for clients: Domotz
FAQ
What is the best free network inventory tool? Angry IP Scanner for on-demand snapshots, NetAlertX for self-hosted always-on scanning, Zenmap when a topology view helps.
Do these tools need admin privileges? For basic discovery, no. For deeper OS fingerprinting or reading Windows shared resources, admin (or a service account) is usually required.
Will these tools slow down my network? A well-behaved scan produces minimal traffic. Aggressive port scans on fragile IoT devices can cause them to misbehave; use gentle scan profiles.
Can I inventory a network from a Raspberry Pi? Yes. Angry IP Scanner and NetAlertX both run on ARM Linux. NetAlertX is designed for exactly this use case.
Is Fing safe to run at home? Yes. Fing runs local scans and does not require exposing your network to the internet. Account-linked features (like remote monitoring) require sign-in.
