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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
16th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
58
Ranking in other categories
Server Monitoring (8th), IT Infrastructure Monitoring (13th), Cloud Monitoring Software (22nd)
NETSCOUT InfiniStreamNG
Ranking in Network Monitoring Software
73rd
Average Rating
8.4
Number of Reviews
13
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2026, in the Network Monitoring Software category, the mindshare of Nagios XI is 2.5%, down from 3.2% compared to the previous year. The mindshare of NETSCOUT InfiniStreamNG is 0.5%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Mindshare Distribution
ProductMindshare (%)
Nagios XI2.5%
NETSCOUT InfiniStreamNG0.5%
Other97.0%
Network Monitoring Software
 

Featured Reviews

Emmanuel Appiah Boateng - PeerSpot reviewer
Network and Security Engineer at a educational organization with 1,001-5,000 employees
Simplifies setup and requires user interface enhancement
Nagios XI is easy to install, which sets it apart from other open-source solutions I've tried. Typically, setting up a monitoring system on Linux involves cloning files from GitHub, building it, and installing many dependencies, but with Nagios XI, it wasn't like that. Nagios XI simplifies our setup and reduces the time spent configuring monitoring tools.
Michael Gideon Genita - PeerSpot reviewer
Associate System Engineer at SMS Global Technologies, Inc.
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

"I can monitor a software made in-house to software of bigger companies."
"The Script Module in Nagios is really easy to use and is really cost efficient."
"It is a very stable solution and the best solution for monitoring any IT infrastructure for all companies."
"Nagios is a custom API manager, and we can expose custom APIs for our integration. This is a great feature."
"It has a lot of flexibility for customization and a wide range of metrics."
"This solution has improved our ability to determine the source of a connection failure in our network, and now we are able to monitor the service provider's router and make that determination."
"If you are a mid-sied company with an eye on expansion, this solution is very good."
"Nagios XI is easy to install, which sets it apart from other open-source solutions I've tried."
"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."
"We use it for monitoring whenever we update a new circuit or site."
"We are attracting customers in good sized numbers as we advertise and market this solution."
"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."
"An issue that used to take days is now fixed within minutes to an hour."
"This solution has saved us hours (three to four) per problem when troubleshooting."
"The most valuable features are speed and cost."
"When we have mobile operators who are signal partners, where one is the roaming host and another is the roamer, we are able to see their traffic. Their packets are able to detect if any faults to develop, and at what point they fail."
 

Cons

"The pricing has recently risen. I know they've changed what is covered under the license, however, it doesn't change the way we use it and adds nothing to our experience, and yet we now have to pay more."
"We often need to develop custom plugins to get Nagios to work the way we want it to work because the features we need are not always available in Nagios."
"While this solution works, I think that it can be improved in terms of maintenance, support, and price."
"The scalability of Nagios XI is scalable. However, it is not easy to do."
"While the UI is functional, I have always thought there was room for improvement here."
"If you are monitoring network devices, often it's not scaled for large corporations. Definitely, a minus in that area."
"The product does not have SAP monitoring."
"For some, it may be difficult to deploy."
"I would like to see an improved level of stitching between IPs."
"The solution is not great, but it is not bad."
"It's not able to communicate with our probes."
"The technology goes end-of-life on us every year, which is why I am looking forward to vSTREAM. I don't like when devices go end-of-life on us so quickly. If we can get more of an advanced notice of when an end-of-life is brought up, because our certification process within the organization takes a while."
"Being able to manage the packet flow switches in nGeniusONE would be great."
"There is a timeout feature that we have been asking for awhile."
"The technology goes end-of-life on us every year, which is why I am looking forward to vSTREAM."
"It can be scalable. It just costs too much."
 

Pricing and Cost Advice

"The pricing is high with separate licensing for the product and support."
"For our country in North Africa, it's expensive and we could purchase another solution for that price. But it's a reasonable price if we're speaking in international terms."
"The pricing is really cost efficient. The licensing is perpetual and can be renewed very easily."
"Nagios XI is an expensive solution."
"The licensing fees for this solution are approximately $3,000 USD per year."
"We are using the free version of this solution."
"Nagios Core does not have any payment, but Nagios XI requires payment for the license."
"You can grow into the higher-priced scale as they learn how to utilize the features for Nagios XI."
"This product could be cheaper."
"I would like it to be more scalable with less spend."
"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."
"To capture more with the solution that we bought, you have to buy another InfiniStreamNG, and there are only four ports in the back."
"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."
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Comparison Review

it_user174738 - PeerSpot reviewer
IT Developer at a tech services company with 51-200 employees
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
Financial Services Firm
10%
Construction Company
8%
Manufacturing Company
7%
Comms Service Provider
7%
Manufacturing Company
16%
Financial Services Firm
12%
Construction Company
11%
Outsourcing Company
7%
 

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: June 2026.
902,988 professionals have used our research since 2012.