NetAlertX
A self-hosted network scanner that discovers devices on your networks and reports changes.
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About NetAlertX
NetAlertX runs on your own server and continuously discovers the devices on your networks, keeping an inventory of what it finds. It watches for changes, such as a new device joining or a known one going missing, so you can stay aware of what is connected.
It is aimed at home lab users and administrators who want visibility across one or several networks without a hosted service. The project ships Dockerfiles and is actively developed, with thousands of commits in its repository.
Strengths
- Continuous discovery of devices on the network
- Alerts when devices appear or disappear
- Runs on your own hardware, with Docker images
- Active development
Limitations
- Needs a server or always-on machine to run
- Setup takes more effort than a one-off scan
Details
- Pricing
- FreeFree to run on your own hardware.
- License
- Proprietary
- Developer
- The NetAlertX contributors
- Platforms
- Self-hosted
- How it runs
- Self-hosted
- Account
- Not required
- Best suited for
- Home lab owners who want to know when an unknown device joins the network
- Categories
- Network tools, Notifications & webhooks
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to NetAlertX
Compare allSoftware that can replace NetAlertX for an important use case, and what changes if you switch.
WatchYourLAN
Lightweight self-hosted network IP scanner with a web interface and alerts for new hosts.
WatchYourLAN is a lightweight self-hosted scanner with alerts for new hosts, online history and exports to InfluxDB2 or Prometheus, covering the local network only.
LAN Orangutan
Lightweight network scanner with persistent device labels.
LAN Orangutan is an open-source scanner with persistent device labels and Tailscale integration, but it is a young project with a smaller feature set.
Fing
Network scanner that identifies the devices on your network.
Fing identifies devices using a cloud database and alerts on new devices through desktop and mobile apps, with advanced features and history behind a paid subscription.
MyLanViewer Network/IP Scanner
A Windows IP scanner that lists computers, MAC addresses and shared folders on a local network.
MyLanViewer is a paid Windows desktop scanner that alerts on new devices and detects rogue DHCP servers instead of running on a self-hosted server.
Domotz
Cloud-managed network monitoring and management for IT teams looking after devices across many sites.
Domotz is a paid cloud-managed service aimed at IT teams monitoring several sites, so monitoring data passes through the vendor instead of your own server.
Similar software
Related functionality, not necessarily a direct replacement.
arp-scan
Command-line tool that discovers and fingerprints hosts on a local network using ARP.
netdiscover
An ARP scanner that finds hosts on a local network by active or passive discovery.
Advanced IP Scanner
Scans a home or office network and lists every device with its name, MAC address and shared folders.
Lansweeper
Network discovery and IT asset inventory platform.
Open-AudIT
An agentless network discovery and IT inventory tool with configuration change tracking and compliance reporting.
phpIPAM
An open-source web application for IP address management with subnet scanning and VLAN management.
