Cacti vs Observium
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
- —
Observium
Observium Limited
7.2
Average across eight dimensions
- Deployment
- Self-hosted
- Licensing
- Free (Community) / annual (Professional)
- Time to value
- Fast
- Segment
- SMB / ISP
- G2
- —
Score by dimension
| Dimension | CA | OB |
|---|---|---|
| Data residency control | 10 | 10 |
| Pricing value | 9.8 | 8.5 |
| Detection accuracy | 6 | 6.5 |
| Response speed | 5.5 | 6 |
| Ease of setup | 6 | 8 |
| Management UX | 5.5 | 7 |
| Integration depth | 6 | 6.5 |
| Security coverage | 4.5 | 5 |
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
Observium
- +Close to zero-configuration for SNMP devices — discovery does most of the work
- +Very light operational burden once running
- +Good long-term trending and interface statistics for network estates
- −Deliberately limited alerting compared with the alerting-first platforms here
- −Community edition updates infrequently; the subscription edition is the maintained one
Best for Network teams wanting trending and visibility with minimal ongoing effort
Watch out If alerting and response workflow matter, pair this with something else or look elsewhere
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Other comparisons
Data last verified 2026-09-16. 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 — deployment model, licensing basis, residency — are verifiable against each vendor's documentation.