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Head-to-head · Server Monitoring

Prometheus vs ManageEngine OpManager

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score Prometheus #4 in Server Monitoring 9.1/10 Free plan Free plan✓ 0 of 3 features Visit Prometheus
ManageEngine OpManager #5 in Server Monitoring 9.0/10 Free plan · 30-day trial Free planFree trial✓ 0 of 3 features Visit ManageEngine

Prometheus leads on 0 checks, ManageEngine OpManager on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scorePrometheus · 9.1/10
  • Free planboth
  • Free trialonly ManageEngine OpManager

Prometheus scores higher on our rubric for server monitoring: 9.1 against 9.0 out of 10; our editors rank them #4 and #5.

Prometheus is the better fit for teams building metric-based monitoring stacks. ManageEngine OpManager is the better fit for network-heavy server environments.

  • Prometheus fits best

    Teams building metric-based monitoring stacks

  • ManageEngine OpManager fits best

    Network-heavy server environments

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Side by side

Feature Prometheus 9.1/10 Visit ↗ ManageEngine OpManager 9.0/10 Visit ↗
At a glance
Editor score 9.1 9.0
Ranking #4 in Server Monitoring #5 in Server Monitoring
Best for Teams building metric-based monitoring stacks Network-heavy server environments
Pricing model Free Free plan + paid
Starting price Free plan $95/yr
Free plan ✓ ✓
Free trial — 30 days
Deployment Self-hosted Self-hosted
Platforms Web, Windows, macOS, Linux Web, Windows, Linux, iOS, Android
Support Community, Docs Email, Docs
Integrations 8 integrations 7 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Prometheus 0/3 · ManageEngine OpManager 0/3
Server auto-discovery Not checked yet Not checked yet
Process monitoring Not checked yet Not checked yet
Container monitoring Not checked yet Not checked yet
Specs
Included hosts Not checked yet Not checked yet
Metric retention Not checked yet Not checked yet
Monitoring method Not checked yet Not checked yet
Supported operating systems Not checked yet Not checked yet
Our review
Pros
  • Labeled time-series model with powerful PromQL querying
  • HTTP scraping with static and service-discovery configuration
  • Rules, federation, and integrations for extensible monitoring stacks
  • Free edition supports monitoring for up to 3 devices
  • Maps networks and analyzes traffic across major flow protocols
  • Enterprise tier supports distributed monitoring at large device counts
Cons
  • Local storage is single-node
  • Broader workflows require surrounding components
  • Uses PromQL rather than SQL for querying
  • Free Edition is limited to 3 devices
  • Traffic and bandwidth analysis is provided through add-ons
  • Network operations receive stronger emphasis than general server depth
Our verdict

Prometheus is an open-source monitoring and alerting toolkit for infrastructure, applications, and services. It collects numeric metrics as labeled, timestamped time-series data, making it a strong fit for teams building metric-based…

Read the review →

ManageEngine OpManager is self-hosted monitoring software for IT teams responsible for servers, routers, switches, virtual environments, WAN links, storage, and other infrastructure. It runs on Windows or Linux and provides web, mobile,…

Read the review →
  1. PrometheusServer Monitoring 9.1Free plan
  2. ManageEngine OpManagerServer Monitoring 9.0Free plan · 30-day trial

Strengths and trade-offs

  • Prometheus — where it wins

    • Labeled time-series model with powerful PromQL querying
    • HTTP scraping with static and service-discovery configuration
    • Rules, federation, and integrations for extensible monitoring stacks

    Where it doesn't

    • Local storage is single-node
    • Broader workflows require surrounding components
    • Uses PromQL rather than SQL for querying

  • ManageEngine OpManager — where it wins

    • Free edition supports monitoring for up to 3 devices
    • Maps networks and analyzes traffic across major flow protocols
    • Enterprise tier supports distributed monitoring at large device counts

    Where it doesn't

    • Free Edition is limited to 3 devices
    • Traffic and bandwidth analysis is provided through add-ons
    • Network operations receive stronger emphasis than general server depth

More comparisons

All server monitoring comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update