Open Source Network Documentation Tools (2026): Self-Hosted & Free
The open-source, self-hosted network documentation and diagram tools compared: Scanopy CE, NetDisco, LibreNMS, NetBox, and more, by license, what they discover, and what they map.
Guides
In-depth, evergreen guides on documenting, mapping, and understanding your network.
Network Mapping Software & Tools (2026): One Network, Several Maps
How network mapping software turns automatic discovery into a topology map you can read, why one network needs several views, and the open-source options.
How to Visualize Podman Containers and Pods on Your Network
See Podman containers and pods in network context, not just per host. How Scanopy discovers your Podman containers, resolves pods, and maps them under the host they run on, alongside the rest of your network.
Network Documentation for ISO 27001 (A.8.20)
What ISO 27001 A.8.20 expects for network documentation: the current diagram and asset inventory auditors ask for, and how automated discovery keeps them current.
Network Documentation for NIS2 Compliance
What NIS2 Article 21 expects around network documentation: the risk analysis and asset management measures that assume a current network map, and how automated discovery produces it.
Network Documentation for HIPAA Compliance
What HIPAA expects for network documentation: the risk analysis, asset inventory, and data-flow mapping the Security Rule assumes, and how automated discovery produces that evidence.
How to Visualize Docker Containers on Your Network
See Docker containers in network context, not just per host. How Scanopy discovers your containers and maps them under the host they run on, alongside the rest of your network.
Map Network Topology with SNMP (The Manual Way)
Map your network topology by hand with snmpwalk. Every SNMP MIB and OID that matters for discovery, what they mean, and how to correlate them into a map.