Infrahub

Infrahub treats infrastructure data like source code: a graph database with branches, peer review and CI applied to your network model. Propose a change, review the diff, merge it. That is a materially different idea from the NetBox model of a system of record you edit in place.

Apache 2.0 and free to self-host. OpsMill builds it and sells enterprise offerings alongside, quoted rather than listed. The versioning is the reason to look: you can stage a change across the whole model and see exactly what it touches before anything reaches a device.

Small teams: NetBox is more mature and better supported. Teams whose network changes already run through a review process: this maps onto how you already work and removes a translation step between intent and record.

The catch is age. Infrahub is early next to NetBox, the community is small and the plugin ecosystem barely exists yet. That is a real risk for something intended to be your source of truth, so pilot it properly before it becomes load-bearing.