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Nagios Core vs ThousandEyes comparison

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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
8.9
Nagios Core boosted operational efficiency, reduced costs, minimized downtime, and significantly improved productivity and disaster recovery times.
Sentiment score
6.2
ThousandEyes offers a positive ROI through time savings, enhanced network performance, and improved customer satisfaction with reduced MTTR.
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
The return on investment is immediate, delivering a 40% to 60% reduction in MTTR by eliminating multi-team war rooms and saving hundreds of engineering hours annually through instant ISP path proof, directly protecting business productivity and SaaS SLA accountability.
Network engineer at a tech vendor with 10,001+ employees
I have seen a return on investment by reducing troubleshooting time and having lesser user mapping error issues, in addition to engineering time saved through better observability and reduced organizational MTTR.
Project Manager at Procter & Gamble
 

Customer Service

Sentiment score
5.5
Nagios Core relies on community and documentation for support, offering valuable resources but facing scalability and consistency challenges.
Sentiment score
7.1
ThousandEyes is praised for exceptional customer service, proactive support, and comprehensive documentation despite minor response time improvements.
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
I would give it a rating of 10 because whenever we have any issues, we can typically reach someone who has the knowledge to help us.
Network Engineer Iii at a healthcare company with 5,001-10,000 employees
Customer support is very prompt, offering on-demand services and support with separate teams for high-level guidance and break-fix issues.
Observability Consultant at a computer software company with 11-50 employees
 

Scalability Issues

Sentiment score
7.6
Nagios Core is highly scalable, supporting diverse infrastructures with open-source flexibility, despite some horizontal scaling concerns.
Sentiment score
7.4
ThousandEyes is highly scalable and adaptable, efficiently serving diverse organizations with easy cloud access despite licensing costs.
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 Assistant Engineer at Staffordshire and Shropshire Health Informatics Service
ThousandEyes's scalability is excellent; it is very scalable and grows with my organization's needs.
Project Manager at Procter & Gamble
We could easily add hundreds of devices with no issue.
Senior Security Consultant at a tech vendor with 10,001+ employees
 

Stability Issues

Sentiment score
8.6
Nagios Core is highly stable and reliable, offering exceptional performance on Linux with minimal plugin-related issues.
Sentiment score
8.2
ThousandEyes is praised for its high stability, reliability, and efficiency, with minimal bugs and minor IT intervention needed.
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
I did not see any downtime.
Senior Security Consultant at a tech vendor with 10,001+ employees
ThousandEyes is not very stable; sometimes you have to reboot the servers to get actual results.
Network Assistant Engineer at Staffordshire and Shropshire Health Informatics Service
 

Room For Improvement

Nagios Core needs a modernized interface, simplified configuration, scalability, and integration with tools like Grafana for improved usability.
ThousandEyes needs better usability, integration, documentation, and enhanced features like network monitoring, visualization, and security at lower complexity.
Incidents should be alerted on and traced early, before they escalate to full outages.
Software Developer at The Code
I think the pricing, setup cost, and licensing for ThousandEyes are too costly.
R&D at a comms service provider with 51-200 employees
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
 

Setup Cost

Nagios Core provides cost-effective, open-source monitoring with engineering setup and maintenance, requiring customization expertise for full benefits.
ThousandEyes pricing views vary, with some users finding value and others noting complexity and potential high costs for small businesses.
My experience with pricing, setup cost, and licensing has been that everything was cost-effective.
Project Manager at Procter & Gamble
My experience with pricing, setup cost, and licensing is that it comes in cheaper than alternatives.
Lead Technical Consultant at a financial services firm with 5,001-10,000 employees
It's too complex, too expensive, and it takes a lot of time to manage the licensing model.
Senior Consultant at a tech services company with 1,001-5,000 employees
 

Valuable Features

Nagios Core offers extensible plugins, alerting, customizable dashboards, proactive monitoring, and integration, enhancing system reliability and minimizing downtime.
ThousandEyes provides deep visibility and proactive troubleshooting, enhancing user experience with AI integration and Cisco compatibility.
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 offers the best features including global internet and cloud visibility from distributed vantage points, application and network performance monitoring, real-time outage detection and incident alerts, end-to-end path visualization for rapid troubleshooting, proactive issue demarcation, and historical data.
Project Manager at Procter & Gamble
ThousandEyes has become critical for swift network troubleshooting as well, so anytime that there's potential issues with applications or we want to be proactive in resolving potential issues before they arise, ThousandEyes is really the platform that we're leveraging for WAN monitoring, Wi-Fi, latency, packet loss, etc.
Vice President, Finance and Operations at Fruitist
 

Categories and Ranking

Nagios Core
Ranking in Network Monitoring Software
19th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
51
Ranking in other categories
IT Infrastructure Monitoring (16th)
ThousandEyes
Ranking in Network Monitoring Software
8th
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
32
Ranking in other categories
Cloud Monitoring Software (10th), Digital Experience Monitoring (DEM) (3rd)
 

Mindshare comparison

As of September 2026, in the Network Monitoring Software category, the mindshare of Nagios Core is 1.3%, down from 2.6% compared to the previous year. The mindshare of ThousandEyes is 1.6%, down from 3.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
ThousandEyes1.6%
Nagios Core1.3%
Other97.1%
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.
Siddumanisria Mindi - PeerSpot reviewer
Network engineer at a tech vendor with 10,001+ employees
Monitoring has transformed internet visibility and speeds up resolving external service issues
ThousandEyes needs to specify unit consumption forecasting or scaling testing and deeper app analytics. It needs deeper out-of-the-box Layer 7 code or database-level insights. Additionally, it should unify the GUI with broader Cisco platforms and flatten the learning curve, adding better correlation with local laptop system metrics such as endpoint depth, CPU, RAM, or processes. ThousandEyes isn't designed to be a full-blown SNMP monitoring tool for on-premises infrastructure. While it tracks network paths effectively, it doesn't provide deep local device telemetry such as switch port buffer utilization, fan status, or power supply health. For full internal device monitoring, you'll still need to pair it with traditional tools such as SolarWinds or Cisco Catalyst Center.
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Manufacturing Company
8%
Financial Services Firm
7%
Outsourcing Company
7%
Financial Services Firm
12%
Manufacturing Company
8%
Healthcare Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise24
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise22
 

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?
We face challenges with hybrid and distributed enterprise networks since we use Cisco, but we also have other third party integrations. When it comes to ThousandEyes, it does not show anything when...
What is your primary use case for ThousandEyes?
I have been using ThousandEyes with this company for two years. The main use case is that we would like to get insights into our calls. Currently, we are still in the POC state with ThousandEyes, b...
 

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: September 2026.
913,806 professionals have used our research since 2012.