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NETSCOUT InfiniStreamNG vs Nagios XI 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:
 

Categories and Ranking

Nagios XI
Ranking in Network Monitoring Software
25th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
58
Ranking in other categories
Server Monitoring (13th), IT Infrastructure Monitoring (28th), Cloud Monitoring Software (25th)
NETSCOUT InfiniStreamNG
Ranking in Network Monitoring Software
78th
Average Rating
8.4
Number of Reviews
13
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Network Monitoring Software category, the mindshare of Nagios XI is 3.1%, down from 3.7% compared to the previous year. The mindshare of NETSCOUT InfiniStreamNG is 0.4%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Nagios XI3.1%
NETSCOUT InfiniStreamNG0.4%
Other96.5%
Network Monitoring Software
 

Featured Reviews

Amir  Said - PeerSpot reviewer
Effective alerting enhances network monitoring experience with an easy setup
We love Nagios XI due to the fact that JPS Web is very useful. JPS monitors the modem and performs switching, monitoring the computer, and performing switching. We implement some applications and traffic monitoring. The alerting system is very effective. For instance, if we have an alarm on some RAM storage if the traffic is cut or dropped.
Michael Gideon Genita - PeerSpot reviewer
Easy to set up with good documentation and helpful support
I'm using it for a customer The packet flow switch is the most valuable aspect of the solution.  It's an easy product to set up. We can scale the solution if we need to. It's stable.  The documentation is well-written and quite useful. It's compatible with other products.  Under the pocket flow…

Quotes from Members

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

Pros

"Nagios XI is stable."
"It is an open-source platform with valuable features for performance and stability."
"It's great for monitoring IT services infrastructure."
"I can monitor a software made in-house to software of bigger companies."
"Nagios XI simplifies our setup and reduces the time spent configuring monitoring tools."
"The technical support is good."
"The most valuable feature is its support for different types of devices, where it can use all of the equipment that you need."
"The solution has a lot of plugins and scripts integrated with it."
"The real-time troubleshooting and application segregation that you can do within it."
"The tool has the ability to look back within a month's data. It is very easy to navigate within the tool and troubleshoot the problem, compared to other solutions that we've used in the past."
"I love the single pane of glass view. It makes it easier to not have to navigate everywhere. It allows more simplistic visibility, without having to go from tool to tool to tool, or from window to window to window."
"The most valuable features are speed and cost."
"The ability to troubleshoot customers' connectivity has been very beneficial."
"It helps us get to root cause quickly. With utilization and consumption of bandwidth, we can usually see what application is taking as much as they should (or shouldn't), then account for it accordingly."
"It is very rock solid. We hardly have any hardware issues."
"It helps us to assist our customers to isolate problems. If it is us who is having the problem, then we can use it to streamline the process."
 

Cons

"It is really difficult to integrate Nagios XI with another system to generate logs and alert our management of failures in security infrastructure."
"Open-source software is usually not user-friendly."
"The tool's AI model needs to be fixed."
"The product uses the backend as Perl and could be modified to a more lightweight solution like what's being offered by other vendors."
"The Configuration Wizard needs improvement, because not all vendors are present."
"The reporting part should be made simpler. While we can obtain all the reports we need, we always have to create work-arounds to get them."
"The reporting structure could be more streamlined."
"It can be quite difficult to know which drivers and agents to use when setting up."
"The stability depends on who is using the tool, because you only can get as much out of the tool as you put into it. There are a lot of patches for this particular environment, so you have to keep on them. If you lose track of them, then the product is not useful anymore."
"Only problems that we have had are fiber issues going into the TAPs or vSTREAMs, which are usually local site issues."
"Being able to manage the packet flow switches in nGeniusONE would be great."
"We don't use the single pane of glass view, even though we own it."
"I would like to see an improved level of stitching between IPs."
"There is a timeout feature that we have been asking for awhile."
"I'd like them to make the product more user-friendly."
"The single pane of glass feed still needs work."
 

Pricing and Cost Advice

"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"We are using the free version of this solution."
"Licensing costs are reasonable."
"Nagios XI is an expensive solution."
"Nagios XI is open source."
"The licensing fees for this solution are approximately $3,000 USD per year."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"Nagios Core does not have any payment, but Nagios XI requires payment for the license."
"The price is a little high."
"The scalability is good, but it comes at a cost. E.g., if you need 100 InfiniStream because you are sending gigs or terabytes of data to one InfiniStream, then you will have to purchase another InfiniStream, which are not cheap."
"This product could be cheaper."
"I would like it to be more scalable with less spend."
"To capture more with the solution that we bought, you have to buy another InfiniStreamNG, and there are only four ports in the back."
"It can be scalable. It just costs too much. With a company as big as ours, it gets too expensive to accommodate every single site."
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Comparison Review

it_user174738 - PeerSpot reviewer
May 31, 2015
Nagios vs. Zabbix vs. PRTG vs. Spiceworks vs. Solarwinds Network Performance Monitor
I have researched a quite a few network monitoring tools which can be used for various monitoring purposes of not only the servers, but the intermediate routers as well. There are majorly three types of these softwares. Ones which are completely open-source, you can do almost anything you want…
 

Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
11%
Manufacturing Company
9%
Government
8%
Financial Services Firm
18%
Manufacturing Company
15%
Energy/Utilities Company
11%
Government
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise17
Large Enterprise21
By reviewers
Company SizeCount
Midsize Enterprise1
Large Enterprise8
 

Questions from the Community

What is your experience regarding pricing and costs for Nagios XI?
The pricing for the Nagios XI product is good and better than other solutions. I would give it a four or five.
What needs improvement with Nagios XI?
The user interface needs improvement. Many tools have poor user interfaces, making them hard to manage and navigate.
What is your primary use case for Nagios XI?
I normally use Nagios XI for our servers. It's not particularly used for network equipment, however, I use it for monitoring our server performance, including CPU, memory, data, and services runnin...
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Also Known As

No data available
InfiniStreamNG, NETSCOUT ISNG, Infinistream
 

Overview

 

Sample Customers

Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
U.S. Department of Defense
Find out what your peers are saying about NETSCOUT InfiniStreamNG vs. Nagios XI and other solutions. Updated: September 2025.
869,760 professionals have used our research since 2012.