Cacti vs Datadog Network Monitoring
A side-by-side comparison on deployment model, data residency, licensing basis and security coverage. Structural facts are verifiable against vendor documentation; the scored dimensions are our assessment.
Cacti
The Cacti Group
6.7
Average across eight dimensions
- Deployment
- Self-hosted
- Licensing
- Free
- Time to value
- Medium
- Segment
- SMB / education
- G2
- —
Datadog Network Monitoring
Datadog
6.8
Average across eight dimensions
- Deployment
- SaaS only
- Licensing
- Per host + flow volume
- Time to value
- Fast
- Segment
- Mid-market / enterprise
- G2
- —
Score by dimension
| Dimension | CA | DD |
|---|---|---|
| Data residency control | 10 | 2 |
| Pricing value | 9.8 | 3.5 |
| Detection accuracy | 6 | 8 |
| Response speed | 5.5 | 8 |
| Ease of setup | 6 | 8 |
| Management UX | 5.5 | 9 |
| Integration depth | 6 | 9.5 |
| Security coverage | 4.5 | 6.5 |
What the comparison says
Cacti is self-hosted and Datadog Network Monitoring is SaaS only. Where your obligations dictate residency, that difference tends to settle the choice before any score is read.
Cacti licenses on free, Datadog Network Monitoring on per host + flow volume. A basis tied to data volume bills you for visibility, which over time shapes how much you are willing to collect.
Cacti leads on residency and pricing value. Datadog Network Monitoring leads on fault detection, alerting speed, ease of setup, management UX, integrations and device coverage.
Cacti
- +Free, stable and extremely light on resources.
- +Long-established SNMP graphing with a large body of community templates.
- +Runs happily on modest hardware in small or isolated environments.
- −Graphing-first: alerting requires plugins and is not a core strength.
- −Interface and workflow are dated, and development pace is slow.
Best for Small or isolated networks needing long-term interface graphing at no cost.
Watch out Treat this as a graphing tool rather than a monitoring and alerting platform.
Datadog Network Monitoring
- +Best-in-class dashboards and correlation with application and infrastructure telemetry.
- +Very large integration catalogue across cloud and on-premises sources.
- +Cloud Network Monitoring ties flow data to service dependencies.
- −SaaS only, and among the most expensive options once host and flow volume are counted.
- −Cost visibility is poor until the first full month's bill arrives.
Best for Cloud-native teams already standardised on Datadog for observability.
Watch out Model the bill against realistic host and flow volume before committing.
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Data last verified 2026-10-06. nPro publishes this comparison. Where nPro appears as one of the platforms listed, its card is marked and its scores are our own assessment. Third-party review scores are sourced from public vendor profiles. Structural facts are verifiable against each vendor's documentation: deployment model, licensing basis and residency.