Cacti vs ManageEngine OpManager
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
- —
ManageEngine OpManager
Zoho / ManageEngine
7.7
Average across eight dimensions
- Deployment
- Self-hosted
- Licensing
- Per device
- Time to value
- Fast
- Segment
- SMB / mid-market
- G2
- 4.5 (235)
Score by dimension
| Dimension | CA | OM |
|---|---|---|
| Data residency control | 10 | 9 |
| Pricing value | 9.8 | 7.5 |
| Detection accuracy | 6 | 7.5 |
| Response speed | 5.5 | 7.5 |
| Ease of setup | 6 | 8 |
| Management UX | 5.5 | 8 |
| Integration depth | 6 | 8 |
| Security coverage | 4.5 | 6 |
What the comparison says
Both platforms are self-hosted, so deployment model is not what separates them here. Cacti is described as medium to reach value, against fast for ManageEngine OpManager.
Cacti licenses on free, ManageEngine OpManager on per device. Neither bills on data volume, so the comparison is about what each licence includes rather than how much you send it.
Cacti leads on residency and pricing value. ManageEngine OpManager 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.
ManageEngine OpManager
- +Considerably cheaper than the enterprise incumbents for comparable coverage.
- +Quick to deploy with sensible defaults and good auto-discovery.
- +Integrates with the wider ManageEngine estate including Log360.
- −Device-count licensing still applies, and add-ons accumulate.
- −Depth of analysis trails the specialist platforms at the top of this table.
Best for SMB and mid-market teams wanting commercial support without enterprise pricing.
Watch out Check which capabilities are core and which are separately licensed add-ons.
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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.