PRTG Network Monitor Alternatives (2026)
- Starting price
- Free tier available
- Free trial
- Free tier + 30 days
- Deployment
- On-prem + cloud
- Best for
- Teams wanting sensor-based monitoring with a free tier
Our verdict
The top alternatives to PRTG Network Monitor are Datadog, ManageEngine OpManager, Zabbix. Datadog is the closest like-for-like option (4.3/5 (~545 G2 reviews), from $5/host/mo). People typically switch from PRTG Network Monitor over pricing model, complexity, or a missing capability — the table compares each alternative on exactly those axes.
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Best for Cloud-native teams wanting unified network, infrastructure, and application observability as SaaS.
- Cloud Network Monitoring (flows)
- Network Device Monitoring (SNMP)
- Unified infra + APM + logs
Free trial Free version - 2
ManageEngine OpManager
Visit ManageEngine OpManager → From $95/yr (10 devices, Standard) PRTG Network Monitor vs ManageEngine OpManager →Best for SMBs and mid-market wanting affordable, device-based network + server monitoring.
- Device-based licensing (all interfaces incl.)
- Network + server + VM monitoring
- Fault + performance management
Free trial Free version -
Best for Budget-conscious teams wanting a fully free, open-source, highly scalable monitoring platform.
- Free + open-source (no license fees)
- Agent + agentless collection
- 250+ official templates
Free trial Free version -
Best for Growing enterprises wanting SaaS hybrid observability with simple per-unit packaging.
- SaaS hybrid observability
- Hybrid Unit licensing (1 unit = 1 device)
- Agentless collectors + auto-discovery
Free trial Free version - 5
Nagios XI
Best for Teams wanting on-prem, perpetually-licensed infrastructure monitoring with a free open-source core.
- SNMP + network device monitoring
- Perpetual on-prem licensing
- Event-driven remediation
Free trial Free version -
Best for MSPs wanting automated network mapping + monitoring.
- Auto network topology
- SNMP monitoring
- Config backup
Free trial Free version -
Best for MSPs wanting affordable per-site network monitoring.
- Network discovery + monitoring
- Unlimited devices per site
- Remote access
Free trial Free version
More alternatives detail
Teams usually move off PRTG Network Monitor for one of three reasons: pricing model, complexity, or a missing capability. The closest like-for-like options on the data we track are Datadog, ManageEngine OpManager, Zabbix.
- Datadog — Cloud-native teams wanting unified network, infrastructure, and application observability as SaaS; from $5/host/mo (4.3/5 (~545 G2 reviews)). Compare directly: PRTG Network Monitor vs Datadog.
- ManageEngine OpManager — SMBs and mid-market wanting affordable, device-based network + server monitoring; from $95/yr (10 devices, Standard) (4.6/5 (~127 G2 reviews)). Compare directly: PRTG Network Monitor vs ManageEngine OpManager.
- Zabbix — Budget-conscious teams wanting a fully free, open-source, highly scalable monitoring platform; from Free tier available (4.3/5 (~192 G2 reviews)). Compare directly: PRTG Network Monitor vs Zabbix.
- Nagios XI — Teams wanting on-prem, perpetually-licensed infrastructure monitoring with a free open-source core; from $2595/one-time (100 nodes, Standard) (4.5/5 (~55 G2 reviews)). Compare directly: PRTG Network Monitor vs Nagios XI.
- Auvik — MSPs wanting automated network mapping + monitoring; from Custom quote (4.5/5 (~200 G2 reviews)). Compare directly: PRTG Network Monitor vs Auvik.
- Domotz — MSPs wanting affordable per-site network monitoring; from $35/site/mo (4.6/5 (~120 G2 reviews)). Compare directly: PRTG Network Monitor vs Domotz.
Frequently asked questions
- What is the best alternative to PRTG Network Monitor?
- Datadog is the top-rated alternative in our data-weighted ranking (from $5/host/mo).
- Why do people switch from PRTG Network Monitor?
- Usually pricing model, complexity, or a missing capability. The table compares each alternative on exactly those axes.