Cacti vs PRTG Network Monitor
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
- —
PRTG Network Monitor
Paessler
7.6
Average across eight dimensions
- Deployment
- Self-hosted
- Licensing
- Per sensor
- Time to value
- Fast
- Segment
- SMB / mid-market
- G2
- 4.7 (213)
Score by dimension
| Dimension | CA | PR |
|---|---|---|
| Data residency control | 10 | 8.5 |
| Pricing value | 9.8 | 6 |
| Detection accuracy | 6 | 7.5 |
| Response speed | 5.5 | 7.5 |
| Ease of setup | 6 | 9 |
| Management UX | 5.5 | 8.5 |
| 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 PRTG Network Monitor.
Cacti licenses on free, PRTG Network Monitor on per sensor. 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. PRTG Network Monitor 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.
PRTG Network Monitor
- +Among the fastest platforms here to get from installer to useful dashboard.
- +Auto-discovery and prebuilt sensors cover most common devices out of the box.
- +Remote probes handle multi-site collection cleanly.
- −Sensor-based licensing gets expensive quickly. Each monitored metric consumes a sensor.
- −Windows-only server, which is a constraint for Linux-centric infrastructure teams.
Best for SMB and mid-market teams wanting quick setup without deep monitoring expertise.
Watch out Count sensors carefully before buying. Real estates consume far more than expected.
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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.