What users are saying about
159 Ratings
13 Ratings
159 Ratings
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Score 7.4 out of 100
13 Ratings
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Score 7.1 out of 100

Attribute Ratings

  • OpenNMS is rated higher in 1 area: Likelihood to Recommend

Likelihood to Recommend

7.5

Nagios Core

75%
42 Ratings
8.4

OpenNMS

84%
4 Ratings

Likelihood to Renew

9.9

Nagios Core

99%
3 Ratings

OpenNMS

N/A
0 Ratings

Usability

4.0

Nagios Core

40%
1 Rating

OpenNMS

N/A
0 Ratings

Support Rating

7.7

Nagios Core

77%
18 Ratings

OpenNMS

N/A
0 Ratings

Likelihood to Recommend

Nagios Enterprises

Nagios monitoring is well suited for any mission critical application that requires per/second (or minute) monitoring. This would probably include even a shuttle launch. As Nagios was built around Linux, most (85%) plugins are Linux based, therefore its more suitable for a Linux environment.
As Nagios (and dependent components) requires complex configurations & compilations, an experienced Linux engineer would be needed to install all relevant components.
Any company that has hundreds (or thousands) of servers & services to monitor would require a stable monitoring solution like Nagios. I have seen Nagios used in extremely mediocre ways, but the core power lies when its fully configured with all remaining open-source components (i.e. MySQL, Grafana, NRDP etc). Nagios in the hands of an experienced Linux engineer can transform the organizations monitoring by taking preventative measures before a disaster strikes.
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The OpenNMS Group

I would recommend all system administrators use some form of network monitoring if they are not already doing so, and I'd definitely recommend people consider OpenNMS if they're shopping around. Small businesses will benefit from the low-cost of entry (it's free!), whilst getting all the enterprise features. Larger businesses can benefit from paid support plans.
However, there's no getting around the fact that you will require some advanced networking and sysadmin knowledge to get the most out of OpenNMS, or at least, be prepared for a steep learning curve. If you don't have the resources to devote this time initially, you may struggle.
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Pros

Nagios Enterprises

  • Monitoring of services is one of the biggest benefits for our company. Being able to respond in a timely fashion keeps business smooth.
  • Hardware and device monitoring are easy to set up with proper parameters.
  • Notification to key staff to be able to respond quickly makes issues go away faster.
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The OpenNMS Group

  • Report on SLA
  • Group network areas
  • Discovery of elements
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Cons

Nagios Enterprises

  • Nagios could use core improvements in HA, though, Nagios itself recommends monitoring itself with just another Nagios installation, which has worked fine for us. Given its stability, and this work-around, a minor need.
  • Nagios could also use improvements, feature wise, to the web gui. There is a lot in Nagios XI which I felt were almost excluded intentionally from the core project. Given the core functionality, a minor need. We have moved admin facing alerts to appear as though they originate from a different service to make interacting with alerts more practical.
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The OpenNMS Group

  • We've had a few issues with delayed alerting.
  • I haven't quite figured out how to make topologies work yet, but I haven't spent a ton of time on it either.
  • We've also had a bit of trouble importing some MIBs, but that usually boiled down to working with the vendor to make sure we had the right MIBs and dependencies.
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Pricing Details

Nagios Core

Starting Price

$0

Editions & Modules

Nagios Core editions and modules pricing
EditionModules
Single LicenseFree1
Single LicenseFree2

Offerings

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services

Entry-level set up fee?

No setup fee

Additional Details

OpenNMS

Starting Price

Editions & Modules

OpenNMS editions and modules pricing
EditionModules

Footnotes

    Offerings

    Free Trial
    Free/Freemium Version
    Premium Consulting/Integration Services

    Entry-level set up fee?

    No setup fee

    Additional Details

    Likelihood to Renew

    Nagios Enterprises

    We're currently looking to combine a bunch of our network montioring solutions into a single platform. Running multiple unique solutions for monitoring, data collection, compliance reporting etc has become a lot to manage.
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    The OpenNMS Group

    No answers on this topic

    Usability

    Nagios Enterprises

    The Nagios UI is in need of a complete overhaul. Nice graphics and trendy fonts are easy on the eyes, but the menu system is dated, the lack of built in graphing support is confusing, and the learning curve for a new user is too steep.
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    The OpenNMS Group

    No answers on this topic

    Support Rating

    Nagios Enterprises

    I haven't had to use support very often, but when I have, it has been effective in helping to accomplish our goals. Since Nagios has been very popular for a long time, there is also a very large user base from which to learn from and help you get your questions answered.
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    The OpenNMS Group

    No answers on this topic

    Alternatives Considered

    Nagios Enterprises

    Because we get all we required in Nagios [Core] and for npm, we have to do lots of configuration as it is not as easy as Comair to Nagios [Core]. On npm UI, there is lots of data, so we are not able to track exact data for analysis, which is why we use Nagios [Core].
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    The OpenNMS Group

    OpenNMS's more attractive GUI and its price break were the main reasons our company chose to explore and use this product. However, it never managed to actually replace Nagios which had a much more established hold within the company. Perhaps we were over-monitoring, but our company claimed a $100k loss per hour of downtime.
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    Return on Investment

    Nagios Enterprises

    • With it being a free tool, there is no cost associated with it, so it's very valuable to an organization to get something that is so great and widely used for free.
    • You can set up as many alerts as you want without incurring any fees.
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    The OpenNMS Group

    • Initial adoption required quite a lot of resources and time to get everything right. Totally worth it for us; just be prepared for a gradual process that will get better and better with time.
    • Once setup and running smoothly, it provides us with all the reporting we could hope for, at near zero cost.
    • With OpenNMS, we're able to offer a much more reliable service to our customers, and spend a lot less time dealing with issues.
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