Nagios Fusion vs vRealize Network Insight comparison

Nagios and Broadcom are both solutions in the IT Infrastructure Monitoring category. Nagios is ranked #64, while Broadcom is ranked #38 with an average rating of 8.3. Nagios holds a 0.4% mindshare in IM, compared to Broadcom’s 0.7% mindshare. Additionally, 100% of Nagios users are willing to recommend the solution, compared to 89% of Broadcom users who would recommend it.

Nagios Fusion

Read 4 Nagios Fusion reviews

492 Views
487 Comparison Views

100% willing to recommend

vRealize Network Insight

Read 47 vRealize Network Insight reviews

2,191 Views
1,008 Comparison Views

89% willing to recommend

Nagios Fusion

vRealize Network Insight

Comparison Buyer's Guide

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Executive SummaryUpdated on Oct 9, 2024

vRealize Network Insight and Nagios Fusion are competitive network management and monitoring products. vRealize Network Insight appears to have the upper hand due to advanced analytics and seamless VMware integration, whereas Nagios Fusion stands out for its extensive monitoring capabilities.

Features: vRealize Network Insight provides advanced network visibility, integrated VMware environment support, and extensive security insights. Nagios Fusion offers centralized monitoring from multiple Nagios instances, network resource tracking, and comprehensive performance metrics analysis.

Room for Improvement: vRealize Network Insight could enhance cross-platform compatibility, streamline user interface functionality, and expand documentation resources. Nagios Fusion would benefit from improved scalability for larger networks, a more intuitive dashboard, and faster deployment processes.

Ease of Deployment and Customer Service: vRealize Network Insight features straightforward deployment in VMware infrastructures and robust customer support. Nagios Fusion offers versatility but requires more configuration and leverages strong community support options.

Pricing and ROI: vRealize Network Insight has a higher initial cost but delivers significant ROI through advanced insights. Nagios Fusion presents a cost-effective pricing model, offering strong monitoring at a budget-friendly price, with satisfactory ROI for cost-conscious companies.

To learn more, read our detailed Nagios Fusion vs. vRealize Network Insight Report (Updated: January 2026).

Buyer's Guide

Nagios Fusion vs. vRealize Network Insight

January 2026

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Helped 880,685 peers since 2012

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

64th

Average Rating

8.2

Reviews Sentiment

7.8

Number of Reviews

Ranking in other categories

No ranking in other categories

vRealize Network Insight

Ranking in IT Infrastructure Monitoring

38th

Average Rating

8.6

Reviews Sentiment

6.0

Number of Reviews

Ranking in other categories

Network Monitoring Software (34th)

Mindshare comparison

As of January 2026, in the IT Infrastructure Monitoring category, the mindshare of Nagios Fusion is 0.4%, up from 0.3% compared to the previous year. The mindshare of vRealize Network Insight is 0.7%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

IT Infrastructure Monitoring Market Share Distribution
Product	Market Share (%)
vRealize Network Insight	0.7%
Nagios Fusion	0.4%
Other	98.9%

IT Infrastructure Monitoring

Featured Reviews

SyarulIdzuddin Adzmi

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…

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Shaijith KB

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.

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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."

"Nagios Fusion version 12.8 excels in user-friendly GUI design, cost-effectiveness, and ease of deployment."

"Being open source lets us customize it for our monitoring needs, saving us money."

"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."

"Also, the ability to troubleshoot all the way across the NSX part of it to the physical and actually watch the packets go through and then see where the bottleneck is or where the interruption is. We run queries on the network flows within the application to find where they are in it and it graphically tells us how the packets are actually going through the system."

"It especially helps with deploying NSX, that you're not having to manually chase down and figure out what you need to do to microsegment VMs. This gives a nice option where you can say, "Hey, this VM, show me what flows are there." I can export it out and then import it as an NSX rule and job done."

"vRNI can trace the flow of each and every packet and it is easy for us to troubleshoot all the issues that we do have with the networking. We can trace down the packet to a point where it has been dropped."

"It is user-friendly. It's pretty simple to deploy and to run. It gives you pretty easy-to-understand reports, very graphically intense, so you can visualize what's going on in your network."

"With this product, we can precisely identify communication patterns between virtual machines within our data center, whether it's east-east or east-west communication."

"What's valuable to us is the ability to get a view into the virtual space, which is something we haven't had before. Before, it was done by collecting from network endpoints and extrapolating into the virtual environment. Now it's coming directly from the virtual environment."

"The most valuable feature for us is that insight into what our network is really doing - it's a fairly complex network. Not having to go through thousands of lines of network configuration to find firewall ports that were open or closed, for various ports, was very valuable. It went out and found everything we need very quickly."

More vRealize Network Insight pros

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."

"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."

"Nagios Fusion should include a 'remember me' option when logging in, so we don't need to enter a username and password every time."

"It needs to be a little easier to use and to understand the information it's putting out. That would make it more helpful. If you're not a network person you need to understand things like network policies and concepts. If you gave it to a regular admin, it would be nice if it were easier for them to pick up what is going on, understand the flows and whether or not stuff should be talking to each other, as opposed to just port groups and IP addresses."

"While it's not exactly a feature, what normally happens when we are trying to look at the VM flow portion is - although Network Insight does have options to integrate a few physical switches into it - we can't really get an end-to-end flow of the network. We might be using a few switches that are not supported by Network Insight. That is where they can improve, in the support for more physical switches and network devices."

"There could be some deeper analytics into packet inspection and trace flows. It could use some kind of machine learning to look at Layer 7 traffic for potential malware or corrupt packets."

"The IT infrastructure industry is expected to evolve towards a hybrid cloud model in the next five to ten years. In this model, most of the customer's resources reside on-premise within a private cloud setup, such as VMware. Another segment operates within public cloud environments like Azure and AWS, and a portion remains in traditional data centers. There should be seamless interoperability between public and private clouds. AWS and VMware need to work together to make it possible. Whether users interact with on-premise infrastructure or configure resources in the public cloud, the user experience must be seamless."

"I would like to see more reporting features, more dashboards."

"In a very general way, I would like to see an improvement in interoperability with third-party product, from other vendors."

"If it had some kind of plugins with vSphere, more effective plugins with Horizon View or other VMWare products, if it had interconnectivity, I think it would be more effective than it is today."

"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."

More vRealize Network Insight cons

Pricing and Cost Advice

"The pricing is quite reasonable, especially when compared to the broader market."

"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."

"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."

"vRealize Network Insight is expensive."

"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 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."

"It's an expensive product because we have a lot of nodes."

"It has brought more money into our company."

More vRealize Network Insight pricing and cost advice

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Top Industries

By visitors reading reviews

No data available

Manufacturing Company

14%

Computer Software Company

12%

Healthcare Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	9
Large Enterprise	41

Questions from the Community

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What do you like most about vRealize Network Insight?

The tool's ease of configuration and use and the availability of information and artifacts through professional services and the web are key factors that customers find valuable.

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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....

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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...

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Also Known As

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Arkin

Overview

Nagios Enterprises delivers official products, services, and solutions for and around Nagios – the industry standard in enterprise-grade IT infrastructure monitoring. With millions of users worldwide, Nagios is the undisputed champion in the IT monitoring space. Our team of dedicated professionals works to ensure total customer satisfaction with all the services we provide. Our extensive network of partners helps extend Nagios services and solutions to new organizations and markets worldwide to meet a variety of business needs. Nagios Enterprises was founded in 2007 by Ethan Galstad. Ethan created what would later become known as Nagios in 1999, and currently serves as the President of Nagios Enterprises.

Nagios

VMware vRealize Network Insight delivers intelligent operations for software-defined networking and security. It helps customers build an optimized, highly-available and secure network infrastructure across multi-cloud environments. It accelerates micro-segmentation planning and deployment, enables visibility across virtual and physical networks and provides operational views to manage and scale VMware NSX deployments.

Broadcom

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

Buyer's Guide

Nagios Fusion vs. vRealize Network Insight

January 2026

Free Report: Nagios Fusion vs. vRealize Network Insight

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