--- title: Nagios XI Reviews meta_title: 'Nagios XI Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 59 reviews by the users' company size, role or industry to find out how Nagios XI works for a business like yours. aggregate_rating: rating_value: 4.5 review_count: 59 scale: '5' date_modified: '2026-10-13' parent_category: name: Monitoring url: https://www.g2.com/categories/monitoring ---

Nagios XI Reviews & Product Details

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Pricing

Pricing provided by Nagios XI.

Free Edition

Free

Standard Edition

Starting at $2,595.00
With One-Time Purchase

User Insights

Average based on 59 real user reviews.

Perceived Cost

$$$$$

Typical contract price

$0k - $0k

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Nagios XI Reviews (59)

Reviews

Nagios XI Reviews (59)

4.5
59 reviews

What do users say?

Generated using AI from real user reviews
Users consistently praise the flexibility and scalability of Nagios XI, highlighting its ability to monitor a wide range of infrastructure components effectively. The software is valued for its customizable alerts and detailed reporting features, which enhance proactive monitoring. However, many reviews note that the initial setup can be complex, requiring a steep learning curve for new users.

Pros & Cons

Generated from real user reviews
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GP
Germano P.
Mid-Market (51-1000 emp.)
Business partner of the seller or seller's competitor, not included in G2 scores.
"It should be improved in the GUI, which should be made responsive, then it would be the best!"
3.5/5
What do you like best about Nagios XI?

Help to gain control over monitoring any element in the company's infrastructure, Nagios will be unmatched by other competitors. Before getting on board with the product, some work is necessary. Many threats can be avoided once you fully check and have a complete understanding of the product. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

A product perhaps too complex for those who need it quickly. It will take beginners a lot of time to understand and get used to the structure and configurations of the application. The GUI interface becomes a bit slow at times if there are many users simultaneously on the network, despite being configured on NIC ports up to 10 Gigabits per second. Review collected by and hosted on G2.com.

Rahil G.
RG
Rahil G.
Senior Technical Associate
Enterprise (> 1000 emp.)
"Nagios"
4/5
What do you like best about Nagios XI?

User Friendly. Alerts pending from time being can be easily seen.

Example:-

Alert ABC:- 4D11h45m2s

D means days

H means Hours

M means min

S means sec

Moreover server can be easily in downtime or maintenance at the time of any activity. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

In case of bulk alerts the alerts get mixed up in the mid instead of coming at the top as nagios follow the recent at the top acc to time frame Review collected by and hosted on G2.com.

FL
Filippo L.
Senior Cloud Architect
Mid-Market (51-1000 emp.)
"Performant but not very scalable and difficult to configure in environments already in production phase"
2/5
What do you like best about Nagios XI?

Nagios is a tool we have used to monitor and track our systems worldwide. We have several cases, but we mainly focus on corporate and Chinese configurations. This has been a great tool that alerted us in advance to prevent many disruptions. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

It seems that there is a way to run. Installable somehow, despite everything never having been possible, even in exchange for great help. Unless the XL is used. Installable from every day ago, in some cases it can be a problem, as it has been more or less planned, pleaded to be considered. In this regard, it has been said that the ideas were thought based on what happened somehow to do it. Bought in response are important. It is not true, however, that it has always and forever originated. Leave a bit in front of everyone. Installable everything that is happening is almost always present in the CLI and can be executed in some ways. This can change from time to time. Review collected by and hosted on G2.com.

Mohan Hundre S.
MS
Mohan Hundre S.
Cloud Engineer
Enterprise (> 1000 emp.)
"Nagios: self-hosted monitoring tool"
4.5/5
What do you like best about Nagios XI?

In our organization, we have used Nagios for a long period of time. Nagios provides monitoring of all mission-critical infrastructure components including applications, services, operating systems, network protocols, systems metrics, and network infrastructure. The application's user interface (UI) is quite simple and easy to use. Nagios is open-sourced, so it is freely available. Nagios is perfect for companies that don't have a budget for IT monitoring but still expect systems to be up 24x7. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

It's very easy to get too many notifications from Nagios. This isn't really a problem due to Nagios itself, because with enough configuration you can stop it from doing this. But too many notifications very quickly lead to Nagios exhaustion in your team, which leads to people ignoring Nagios. Review collected by and hosted on G2.com.

DP
Dewa P.
Project Manager
Mid-Market (51-1000 emp.)
"Best server monitoring tool for data centers"
4.5/5
What do you like best about Nagios XI?

Nags XI is best server monitoring tool, it has a simple interface to easily manage servers and alerts this contains great features for managing server alerts and continuous monitoring of the servers. this has features for network infrastructure monitoring, server performance monitoring, advanced user management, easy customizable user interface and advanced graphs and dashboard are key are the key features of this product. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

Price is really highly of this product if the Nagios XI team can reduce the price it will be a great opportunity for customers. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
UI
Verified User in Information Technology and Services
Mid-Market (51-1000 emp.)
"Best End to End Monitoring Software."
5/5
What do you like best about Nagios XI?

Working in a Networking Field, it is very important to do monitoring of our client end to end. Nagios XI plays a major role for doing monitoring. We also use Nagios XI in addition for monitoring our Fiber Dark Core Ring and Switches. It is very easy to use as its performance level is very good regarding alerts. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

Sometime the Nagios get hanged and it difficult to monitor the path and Switches. Otherwise it is good. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
UI
Verified User in Information Technology and Services
Mid-Market (51-1000 emp.)
"The Best Network Monitoring Software."
5/5
What do you like best about Nagios XI?

We use Nagvis 1.7.6 Version in our company. We worked as ISP, so we need to monitor our devices and path continuously from end to end. Nagvis plays an important role in monitoring our whole network. Quick Alert and a message tone help to know the failure device or a path. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

Nothing to dislike about Nagvis but when it gets hang we are not able to monitor. Review collected by and hosted on G2.com.

Verified User in Internet
UI
Verified User in Internet
Mid-Market (51-1000 emp.)
"Nagios XI"
5/5
What do you like best about Nagios XI?

Nagios XI provides complete network monitoring on a single screen. We are using this for live monitoring. It's very helpful for us to monitor our fiber network connectivity. It shows the up and down network. We are doing live monitoring using Nagios XI. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

It requires a large display for monitoring. When multiple networks go down, it becomes very complicated for monitoring. Review collected by and hosted on G2.com.

BM
Bimalka M.
Senior Network Engineer
Mid-Market (51-1000 emp.)
"Ideal Solution for Server monitoring and Alerting."
5/5
What do you like best about Nagios XI?

Nagios XI is the one and only solution we use for monitor our servers bandwidth, capacity and memory sizes in production servers it alerts when servers exceed the threshold levels. So it is and ideal solution for monitor all of the servers in one single dashboard and it creates hazel free server maintenance environment for the organization. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

If Nagios can improve the user interface it will be good for users. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
UI
Verified User in Information Technology and Services
Mid-Market (51-1000 emp.)
"The Best Network Monitoring Tool."
5/5
What do you like best about Nagios XI?

Nagios XI is a good Monitoring tool for a large network. It is best for end to end monitoring of the networks. It provides the information such as uptime and downtime. The red indication of a device failure with a buzzer helps us to know that the device is down. The performance and response of Nagios XI is too good. Review collected by and hosted on G2.com.

What do you dislike about Nagios XI?

Sometimes it does not work properly and is unable to monitor the network and it gets hanged also. Review collected by and hosted on G2.com.

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GU
Guest User
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Last activity 12 days ago

What is Nagios XI used for?

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Pricing Options

Pricing provided by Nagios XI.

Free Edition

Free

Standard Edition

Starting at $2,595.00
With One-Time Purchase

Enterprise Edition

Starting at $4,690.00
With One-Time Purchase
Nagios XI Comparisons
Nagios XI Features
Performance Monitoring
Alerting
Improvement Suggestions
Performance Baseline
Data Visualization
Path Analysis
Activity Dashboard
Real-Time Notifications
Uptime Reporting
Capacity Management
Performance Baseline
Bandwidth Monitoring