NetMap review
An open-source toolkit combining topology, discovery, IPAM, inventory, and monitoring.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
NetMap is an open-source, self-hosted network visibility and operations tool aimed at home labs and small environments. It brings topology mapping together with device inventory, IP address management, monitoring, discovery, and firewall syslog ingestion. The topology canvas supports device links, VLANs, logical clusters, annotations, and named sites, while the inventory is searchable and supports filters, bulk editing, device types, and custom icon packs. This combination suits small teams that want a single place to map and track their network rather than a topology-only application.
Its operational scope is broader than the canvas. Discovery uses bundled Nmap, with optional SNMPv2c queries for routers or Layer 3 switches; data sources also include DHCP lease files and syslog over UDP or TCP. Monitoring covers ICMP, TCP, HTTP/HTTPS, and DHCP-aware checks with uptime tracking. IPAM handles subnets, VLANs, DHCP leases, reservations, and external allocations. Alerts can go through email, chat, webhooks, and notification services, and firewall syslog messages can be searched and linked to inventory. Network utilities include ping, traceroute, TCP connect, DNS lookup, SNMP probe, and a subnet calculator.
NetMap runs in a single Docker container containing its web UI, API, database, and syslog receiver, without cloud accounts or subscriptions. The repository describes it as self-hosted with no subscriptions; the product is open source, but no commercial plan structure is documented. It also provides role-based access control, PDF, CSV, and JSON exports, and database backup and restore. Its stated solo and small-team fit, plus documentation as the support channel, make it a more natural choice for operators comfortable managing self-hosted tools than for organizations seeking a vendor-supported, broader-scale platform.
NetMap pros and cons
- Where it wins
- Editable topology canvas with links, VLANs, clusters, annotations, and sites
- Combines Nmap discovery, device inventory, IPAM, monitoring, and syslog
- Exports to PDF, CSV, and JSON; supports database backup and restore
- Where it doesn't
- Self-hosted deployment requires operating the software environment
- Stated fit centers on solo users and small environments
- Support channels are limited to documentation
NetMap fact sheet, pricing and score →
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