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Nagios Fusion vs vRealize Network Insight comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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 Fusion
Ranking in IT Infrastructure Monitoring
71st
Average Rating
8.2
Reviews Sentiment
7.8
Number of Reviews
4
Ranking in other categories
No ranking in other categories
vRealize Network Insight
Ranking in IT Infrastructure Monitoring
43rd
Average Rating
8.6
Reviews Sentiment
6.0
Number of Reviews
47
Ranking in other categories
Network Monitoring Software (36th)
 

Mindshare comparison

As of September 2026, in the IT Infrastructure Monitoring category, the mindshare of Nagios Fusion is 0.5%, up from 0.3% compared to the previous year. The mindshare of vRealize Network Insight is 0.8%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
IT Infrastructure Monitoring Mindshare Distribution
ProductMindshare (%)
vRealize Network Insight0.8%
Nagios Fusion0.5%
Other98.7%
IT Infrastructure Monitoring
 

Featured Reviews

SI
Operation Director at Digital Pulse Sdn Bhd
A suitable choice for unified and efficient infrastructure monitoring across diverse environments providing user-friendly GUI, cost-effectiveness, and versatility
We use it for this specific client, they've deployed multiple instances of it across various locations to facilitate monitoring. To effectively monitor their infrastructure, it seems necessary to implement additional monitoring solutions for all three types of devices they have Nagios Fusion…
Shaijith KB - PeerSpot reviewer
Senior System Specialist at General Directorate of Residence and Foreigners Affairs (GDRFA)
Comprehensive management and detailed reports benefit operations while improvements are needed in support and maintenance
We have Tanzu and OpenShift. We have OpenShift, Canonical, and the Tanzu one. The Tanzu platform from VMware is a Kubernetes platform. We haven't completely installed Tanzu yet; we installed the vROps part. vRealize Network Insight is beneficial because you can control the East-West traffic. vRealize has a component called NSX, which has East-West traffic controlling and micro-segmentation, that is one of the best options, and we have the layer extension, layer 2 extension possible through NSX. If you have anything accountable in any business, even in a candy business, having proper accountability on what you are selling and buying will save a lot. If you don't know what you're selling and buying, you will end up with a loss. My team does not use the flow analytics feature; we have a security and network monitoring team, which is a different SOC team. I am using it as an administrator internally. We perform different tasks including costing analysis, capacity management, and many other things. vRealize Network Insight has a concern about the maintenance part, as it requires a person to monitor it completely. It's not something you install and your report will be generated automatically. You have to work on this properly to get the insights. vRealize Network Automation, vRealize Operations, and vRealize Network Insight are completely related to the network. I cannot say much about these network aspects because I am on the operations side, but overall, the vRealize suite is good for reporting perspective or any ISO-related documentation; this is very helpful. The product is called vRealize Operations Manager, and now it is referred to as Aria or vAria. I am now a Senior System Specialist. We use different metrics because we have multiple departments, and we can monitor utilization and comparisons with the previous year. On a scale of one to ten, I rate this solution a seven.

Quotes from Members

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

Pros

"It is easier for client installation, and the configurations are doable even for a newcomer in the field."
"It's very easy to manage and monitor it."
"Being open source lets us customize it for our monitoring needs, saving us money."
"Nagios Fusion version 12.8 excels in user-friendly GUI design, cost-effectiveness, and ease of deployment."
"It gives the visibility that was either broken or there in pieces only. This solution provides a unified view of the whole system, back and forth. It has helped to reduce time to value, increase performance, more easily manage networks, and provide deep visibility."
"It's user-friendly. It's similar to the GUI that most VMware products are moving to, and the consistency across those makes it easy to switch from one product to another. Also, the search bar at the top is plain text and it helps you, it guides you along with your search query, so that helps. The first day you're in there you can start building actual queries."
"The solution is also extremely intuitive and user-friendly."
"The automation collects all the relationships between servers, allowing us to visualize these relationships and organize the migration into waves."
"We have seen ROI by using it, as we used to use a few tools combined to get to what we're getting by using this solution now, so we don't have to pay as much support and we don't have to buy three or four tools to do what we need done."
"The initial was straightforward. You can have it up and running in one hour."
"The solution is extremely intuitive and user-friendly. When you log in to the application you are presented with a dashboard that is very reasonable for an initial user, and you can then customize it to your specific needs. But for all the data that we've found, we've only had to go through two or three drill-downs to get into that information."
"As a troubleshooting tool, it's a level-3 troubleshooting-skills tool and it's very easy to use and very easy to find the information that you need."
 

Cons

"There are some bugs, although not that many. There are some situations where the solution is not stable but the number of problems is not very high."
"Nagios Fusion should include a 'remember me' option when logging in, so we don't need to enter a username and password every time."
"In future iterations of this solution, there is a desire for more seamless integration with other monitoring software."
"Adding application performance monitoring to the product alongside infrastructure monitoring would make it a more complete and useful solution."
"The only real improvement they can make is to add more third-party vendors into the environment, mostly switch manufacturers, because it's really limited to Cisco equipment and there are a lot of companies out there other than Cisco."
"I want to be able to monitor a network flow that is approximately two weeks back, but I haven't found an easy way to do this."
"Since Broadcom acquired VMware, it has been experiencing challenges. Many sales processes are not well defined."
"There is room for improvement as not all cases are getting resolved, and we often do not get L3 support directly, having to go through L1 and L2, resulting in delays that usually are a headache for us."
"The solution can be improved by making it more compatible with other brands, allowing for better integration."
"I would like to see more reporting features, more dashboards."
"Support could be much better. They do not do a good job of finding issues."
"I want to see more in terms of microsegmentation. As of now, I can see the rules, but they are not in a readable format that I can convert to microsegmentation and can fit into NSX Manager."
 

Pricing and Cost Advice

"The pricing is quite reasonable, especially when compared to the broader market."
"The solution has helped us to reduce time, increase performance, reduce costs, and even easily manage networks. We are probably seeing 10 to 20 percent labor savings because we are able to be very specific and focused on what we want to do. It ends up saving the customer money and makes us be more efficient on our cost deliveries."
"It's an expensive product because we have a lot of nodes."
"vRealize Network Insight is expensive."
"It reduces costs. It takes something that may be challenging and makes it more usable and visual by being able to bring in tools, seeing what their impact is, such as microsegmentation and application rationalization, and seeing it quickly."
"They should include the product in NSX because it's important to have it for deployment."
"It's a little expensive, but for what you're getting out of the product, you often see the trade-off. It depends on the type of licensing you have. It might be a little too pricey for some."
"Cost always has room for improvement, you could always make it cheaper. But I think it's a good value for what you pay for it."
"We have spent less time investigating network flows, so it is absolutely cost-effective."
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Top Industries

By visitors reading reviews
Comms Service Provider
12%
Construction Company
10%
Manufacturing Company
10%
Marketing Services Firm
8%
Outsourcing Company
15%
Construction Company
13%
Manufacturing Company
9%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise9
Large Enterprise43
 

Questions from the Community

Ask a question
Earn 20 points
What is your experience regarding pricing and costs for vRealize Network Insight?
In VMware you have to buy a separate license for it. We have VVF and VCF-type of licenses, and if you want to go with this NSX and sort of higher-end professional services, you need to go with VCF....
What needs improvement with vRealize Network Insight?
There is room for improvement as not all cases are getting resolved, and we often do not get L3 support directly, having to go through L1 and L2, resulting in delays that usually are a headache for...
What is your primary use case for vRealize Network Insight?
We have Tanzu, and we also work with multiple Kubernetes services such as Nutanix and Google. We are working on these Kubernetes services on the operations side. For Tanzu, we have several componen...
 

Also Known As

No data available
Arkin
 

Overview

 

Sample Customers

NuBlue, St.Elisabeth Hospital, Akamit Systems, National Radio Astronomy Observatory, ValueClick, Sunrise Banks
NTTi3, VCIX-NV, VMware Networking and Security Business Unit, Illumio, CompuNet
Find out what your peers are saying about Nagios Fusion vs. vRealize Network Insight and other solutions. Updated: September 2026.
914,805 professionals have used our research since 2012.