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Nagios Core vs ThousandEyes comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 10, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

ROI

Sentiment score
8.8
Nagios Core reduces downtime and costs with quick alerts, providing full ROI and eliminating expensive monitoring tools.
Sentiment score
7.4
ThousandEyes offers value through time and cost savings, improving network performance and user experiences, yielding high investment returns.
There has been a great ROI from using ThousandEyes, with significant time saved in troubleshooting as I can quickly pinpoint issues rather than spending time isolating them, alongside enhancing customer feedback and experience.
Senior cloud engineering lead and IT project owner at KDD
 

Customer Service

Sentiment score
5.1
Nagios Core relies on community support, praised for stability and resources, but lacks official help compared to Nagios XI.
Sentiment score
7.1
ThousandEyes is praised for exceptional customer service, with efficient issue resolution and high overall user satisfaction.
We contacted the support team, and they resolved it within a couple of hours.
System Operation Associate at a financial services firm with 10,001+ employees
 

Scalability Issues

Sentiment score
6.7
Nagios Core shows scalability for large networks but may need customizations and integrations for distributed environments.
Sentiment score
7.4
ThousandEyes excels in scalability, supporting diverse functions and users but faces licensing cost challenges during expansion.
The solution is scalable.
Senior System Administrator at Interactive Group
Scalability with ThousandEyes is straightforward as you don't really need to scale; it's designed to monitor multiple applications, accommodating 50 or 100 applications simultaneously.
Network and Systems Engineer at a healthcare company with 11-50 employees
 

Stability Issues

Sentiment score
8.2
Nagios Core is highly stable and reliable with minimal footprint, supporting extensive monitoring without network burden.
Sentiment score
8.0
ThousandEyes is highly stable and reliable, with few bugs and no crashes, receiving positive feedback from users.
I tried many other solutions at work, however, in terms of Nagios, I haven't seen any disruption or downtime.
Senior System Administrator at Interactive Group
From my experience, ThousandEyes has been stable up to 95%; I have not seen any stability issues.
Senior cloud engineering lead and IT project owner at KDD
ThousandEyes is not very stable; sometimes you have to reboot the servers to get actual results.
Network and Systems Engineer at a healthcare company with 11-50 employees
 

Room For Improvement

Nagios Core needs a more intuitive interface, better scalability, and features like enhanced reporting and integration with modern tools.
ThousandEyes should enhance customization, integration, user-friendliness, and analytics while reducing costs and improving documentation and incident management.
Having a dedicated incident alert system for URL alerts would help manage noise and streamline operations, especially during patch upgrades.
System Operation Associate at a financial services firm with 10,001+ employees
Introduction of a free version for end-users and enhancements to the user interface for easier navigation.
Senior cloud engineering lead and IT project owner at KDD
An area where ThousandEyes can be improved is in providing more in-depth packet analysis; we've found instances where ThousandEyes indicates everything is okay, but it's actually not.
Network and Systems Engineer at a healthcare company with 11-50 employees
 

Setup Cost

Nagios Core is a free, cost-effective open-source tool, but requires Linux expertise and incurs hosting and maintenance costs.
ThousandEyes offers varied pricing based on usage, seen as mid-range, suiting large enterprises but challenging smaller businesses.
 

Valuable Features

Nagios Core provides flexible, low-resource monitoring with customization, automation, efficient alerts, and integration support for reliable IT performance visibility.
ThousandEyes provides detailed monitoring and diagnostics to enhance user experience and improve troubleshooting with cloud providers and ISPs.
You can monitor anything.
Senior System Administrator at Interactive Group
I measure the 70% improvement in customer experience through customer tickets and feedback after resolving issues, where previously, users faced problems and limited time on the platform, and after using ThousandEyes, the user time reached up to five to six hours a day, even for teams possibly totaling 30 hours a day.
Senior cloud engineering lead and IT project owner at KDD
ThousandEyes provides the exact error from the client, making troubleshooting more efficient.
System Operation Associate at a financial services firm with 10,001+ employees
The best features ThousandEyes offers include monitoring page load times, assessing how long it takes for an application to load, checking for packet loss and jitter, and monitoring the routing path from the user to the server hosted in the cloud or on-premises.
Network and Systems Engineer at a healthcare company with 11-50 employees
 

Categories and Ranking

Nagios Core
Ranking in Network Monitoring Software
10th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
51
Ranking in other categories
IT Infrastructure Monitoring (11th)
ThousandEyes
Ranking in Network Monitoring Software
7th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
19
Ranking in other categories
Cloud Monitoring Software (13th), Digital Experience Monitoring (DEM) (5th)
 

Mindshare comparison

As of January 2026, in the Network Monitoring Software category, the mindshare of Nagios Core is 1.9%, down from 3.0% compared to the previous year. The mindshare of ThousandEyes is 2.4%, down from 3.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
ThousandEyes2.4%
Nagios Core1.9%
Other95.7%
Network Monitoring Software
 

Featured Reviews

HY
Senior System Administrator at Interactive Group
Monitoring solution provides comprehensive visibility across IT infrastructure
The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.
Abdalraheem Asha - PeerSpot reviewer
Senior cloud engineering lead and IT project owner at KDD
Has improved collaboration with providers and pinpointed issues across regional networks
ThousandEyes has been the most user-friendly tool I have seen in the past couple of years, making life easier in troubleshooting and helping us find what's happening while offering vivid options on how to use the agents or the server-side tools with multiple options to trace out the issues. The best features ThousandEyes offers include the ability to place two different points or nodes, such as a server or a node in the cloud in my account, then installing agents and tracing the connectivity which helps me build a perfect user experience to check what's happening while users access my resources. I love the dashboards in ThousandEyes and the way I see the results after placing or doing the tests; this is perfect, and I would say this is the best thing. ThousandEyes has positively impacted my organization by raising the customer experience and positive feedback by over 70% due to the complex situation with local service providers, allowing me to resolve user feedback and issues which enhanced the user experience significantly. I measure the 70% improvement in customer experience through customer tickets and feedback after resolving issues, where previously, users faced problems and limited time on the platform, and after using ThousandEyes, the user time reached up to five to six hours a day, even for teams possibly totaling 30 hours a day.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Manufacturing Company
10%
Comms Service Provider
9%
Government
8%
Financial Services Firm
12%
Computer Software Company
12%
Manufacturing Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise22
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise3
Large Enterprise12
 

Questions from the Community

What is your experience regarding pricing and costs for Nagios Core?
Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.
What needs improvement with Nagios Core?
The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.
What is your primary use case for Nagios Core?
I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...
What is the best network monitoring software for large enterprises?
It actually depends on the exact purpose or requirements. Some tools are better for only network devices while others are better from a cloud monitoring or APM monitoring perspective. You can check...
What needs improvement with ThousandEyes?
ThousandEyes could focus more on end-users than enterprises, as the solution is powerful, and collaboration with multiple cloud providers should be developed for better test traceability, with the ...
What is your primary use case for ThousandEyes?
My main use case for ThousandEyes is troubleshooting, with a specific example being testing connectivity through IXP to ensure the fastest route in collaboration with service providers over the reg...
 

Comparisons

 

Overview

 

Sample Customers

Airbnb, Cisco, PayPal, FanDuel
Wayfair, GitHub, Craigslist, Comcast, SurveyMonkey, Lyft, Box, HP, Zendesk, IO Data Centers, Good Technology, NNTCommunications, Proofpoint, Schneider, Crowdstrike, Avera, Pitney Bowes, InstartLogic, Shutterfly, Shutterstock, Condé Nast, Roche, Jive, Actelion, Brocade, Infor, Okta, JLL, DigitalOcean, Zuora, NetSuite, CloudFlare, One, DemonWare, Quantcast, Carbonite, CareerBuilder, Prosper, Oscar, Slack
Find out what your peers are saying about Nagios Core vs. ThousandEyes and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.