Netdisco
Netdisco: A focused open-source choice for mapping devices, ports, VLANs, and network topology. Ranked #13 of 35 in Network Discovery Software by our editors (7.9/10); pricing: Free plan; best for open-source network topology and port mapping.
At a glance
- Editor score7.9 / 10
- PricingFree plan
- Best forOpen-source network topology and port mapping
- Free planYes
- Paid fromFree
- Facts checked20 Sep 2026
Where it wins
- Interactive topology maps with automated and manual link discovery
- MAC-to-switch-port and MAC-to-IP mapping
- VLAN, PoE, interface, chassis, and historical record collection
Where it doesn't
- Self-hosted, on-premises deployment limits cloud-first use cases
- Platform coverage centers on web, Linux, and self-hosted environments
- Topology maps do not cover application or service dependencies
Our verdict on Netdisco
Netdisco is a self-hosted, web-based network management tool for small to very large networks. It collects device and node data into PostgreSQL through network polling and device APIs, then presents inventories, MAC and IP locations, switch-port information, historical records, network maps, and an API. Its automated discovery starts from seed devices and can learn devices and links through neighbor and routing protocols. Network teams that need open-source topology mapping, port lookup, and hardware visibility are the clearest fit.
Netdisco uses an open-source pricing model with a free plan. Its deployment model is on-premises and self-hosted, with a web interface, backend daemon, and command-line tools. The platform list covers web and Linux environments, so it is better suited to teams prepared to operate the application within their own infrastructure than to buyers seeking a managed cloud service. The product also provides search and retrieval through an API, while the published product details do not identify integrations with external platforms.
Its strongest area is network-level visibility: interactive topology maps, manual topology links, MAC-to-switch-port lookup, MAC-to-IP mapping, hardware inventory, and collection of VLAN, PoE, interface, and chassis information. It also supports switch-port, VLAN, and PoE control, plus historical IP and location records. The topology model focuses on layer-1 and layer-2 neighbor relationships rather than application or service dependencies. Choose Netdisco when open-source discovery and network control matter most; choose another category option when you need cloud deployment, broad platform coverage, or application dependency mapping.
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Netdisco pricing
Netdisco fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Discovery method | Not verified |
| Topology mapping | Not verified |
| Asset inventory | Not verified |
| Scheduled discovery | Not verified |
| Network scope | Not verified |
| SNMP discovery | Not verified |
| Discovered asset limit | Not verified |
| Deployment | Self-hosted |
| Platforms | Web, Linux |
| Support | Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | netdisco.org |
| Facts checked | 20 Sep 2026 |
Alternatives to Netdisco
- ManageEngine OpUtilsA focused, affordable choice for IP, subnet, and switch-port discovery.9.3
- ServiceNow DiscoveryA broad, agentless discovery capability for organizations centered on ServiceNow CMDB.9.2
- SolarWinds Network Topology MapperA focused on-premises mapper for automated Layer 2/3 topology diagrams.9.1
See all Netdisco alternatives →
Also Ranked In
Netdisco is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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