Pi.Alert
Pi.Alert: A free, open-source network monitor for device discovery, change alerts, and service checks. Ranked #19 of 33 in Wi-Fi Security Scanner Apps by our editors (6.6/10); pricing: Free plan; best for self-hosters monitoring devices and web services.
At a glance
- Editor score6.6 / 10
- PricingFree plan
- Best forSelf-hosters monitoring devices and web services
- Free planYes
- Paid fromNone
- Device discoveryYes
- Facts checked5 Oct 2026
Where it wins
- Discovers devices through local scans and supported data imports
- Alerts on unknown connections and disconnections
- Adds scheduled scans, service checks, plugins, and automation options
Where it doesn't
- Does not provide verified security checks
- Requires a self-hosted Linux setup
- Community and documentation are the listed support channels
Our verdict on Pi.Alert
Pi.Alert is an open-source network monitoring app for home and small-network administrators who want visibility into connected devices and configured web services. It scans a Wi-Fi or LAN network, tracks device and IP information, and keeps device history and scan events. Alerts can flag unknown devices and disconnections, making it useful for self-hosters who want to notice changes on a network they manage rather than rely on a hosted scanner.
Its scope extends beyond device discovery. Scheduled scans store results over time, and configured web services can be monitored for HTTP status, SSL certificate, and response time. The project supports integrations with Home Assistant, Pi-hole, UniFi, FRITZ!Box, MikroTik, OpenWrt, AsusWRT, pfSense, OPNsense, and AdGuard Home. API endpoints, webhooks, CSV exports, and plugins provide ways to connect scan results with automation and extend data collection. Installation is documented for Raspberry Pi and Debian-based Linux systems, so it fits people comfortable managing Linux-hosted software.
Pi.Alert is free and open source, with no commercial tier structure to weigh. The trade-off is that it does not provide verified security checks: its focus is discovering devices and monitoring changes, not assessing whether devices or services are secure. Support is through community resources and documentation. Choose it if you want a self-hosted view of network devices plus service monitoring and automation hooks; look elsewhere if you need verified security assessment or prefer a managed product with direct support.
Your product? Our editors can test Pi.Alert in depth and publish a review, labelled as paid · from $99/mo →
Pi.Alert pricing
Pi.Alert fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Device discovery | Yes |
| Security checks | No |
| Monitoring alerts | Yes |
| Supported platforms | Linux (self-hosted); web interface |
| Scan method | Both |
| Deployment | Self-hosted, Cloud |
| Platforms | Web, Linux |
| Support | Community, Docs |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 10 integrations: Home Assistant, Pi-hole, UniFi, FRITZ!Box, MikroTik, OpenWrt … |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 5 Oct 2026 |
Pi.Alert integrations
Pi.Alert lists 10 integrations on its own site.
- Home Assistant
- Pi-hole
- UniFi
- FRITZ!Box
- MikroTik
- OpenWrt
- AsusWRT
- pfSense
- OPNsense
- AdGuard Home
Alternatives to Pi.Alert
- Fing SecurityA broad Wi-Fi scanner for finding devices, checking risks, and monitoring networks.9.2
- SoftPerfect WiFi GuardA focused desktop scanner for spotting and tracking unknown network devices.8.6
- DomotzBroad network monitoring with a free discovery tier and paid per-collector or per-device plans.8.4
See all Pi.Alert alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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