InSpectre review
An open-source LAN scanner with device monitoring, vulnerability scans, and blocking controls.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
InSpectre is a self-hosted home-network monitor and security scanner for people who want to inspect and manage devices on a local network. Its discovery combines active ARP sweeps with passive ARP/DHCP sniffing, then fingerprints devices using OUI, DHCP, and port-pattern data. It is aimed at solo users and small setups such as home labs, rather than teams seeking a managed, hosted scanner. The project describes it as free and open source under AGPL-3.0 for personal use, home labs, and open-source projects.
The core focus is ongoing visibility and control, not just a one-time inventory. InSpectre can scan ports, track changes against device baselines, schedule vulnerability scans using Nuclei and nmap, and monitor whether devices are online or offline. Network traffic monitoring and diagnostic tools add context when investigating a device or network change. Users can configure notifications through channels including ntfy, Gotify, Slack, Telegram, Discord, email via SMTP, Matrix, Microsoft Teams, and Signal; Home Assistant and Docker are also among the listed integrations. This breadth makes it relevant to self-hosters who already manage their own network services and want scanner events to reach existing tools.
Deployment is the main trade-off: InSpectre runs as a containerized stack on hardware the user controls, so it suits readers comfortable maintaining a self-hosted service more than those looking for a ready-made app. Device blocking and recurring block schedules give it an active control role, but users should consider the project’s licensing boundary before adopting it commercially: embedding it in proprietary products or offering it as a hosted service requires a commercial license. Documentation is the stated support channel. Choose InSpectre for local discovery, scheduled checks, alerts, and blocking under your own control; choose another option if managed hosting or a broader support channel matters more.
InSpectre pros and cons
- Where it wins
- Finds devices through active ARP sweeps and passive ARP/DHCP sniffing
- Schedules Nuclei and nmap vulnerability scans and tracks device changes
- Offers presence alerts, device blocking, and many notification channels
- Where it doesn't
- Requires a self-hosted containerized deployment on hardware you control
- Commercial embedding or hosted-service use requires a commercial license
- Documentation is the listed support channel
InSpectre fact sheet, pricing and score →
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