Nagios Fusion vs vRealize Network Insight comparison

Nagios and VMware are both solutions in the IT Infrastructure Monitoring category. Nagios is ranked #47 with an average rating of 8.5, while VMware is ranked #41 with an average rating of 8.7. Nagios holds a 0.2% mindshare in IM, compared to VMware’s 0.5% mindshare. Additionally, 100% of Nagios users are willing to recommend the solution, compared to 89% of VMware users who would recommend it.

Nagios Fusion

Read 4 Nagios Fusion reviews

288 Views
285 Comparison Views

100% willing to recommend

vRealize Network Insight

Read 46 vRealize Network Insight reviews

1,784 Views
785 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: July 2025).

Buyer's Guide

Nagios Fusion vs. vRealize Network Insight

July 2025

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Helped 862,077 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

47th

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

41st

Average Rating

8.6

Reviews Sentiment

7.6

Number of Reviews

Ranking in other categories

Network Monitoring Software (38th)

Mindshare comparison

As of July 2025, in the IT Infrastructure Monitoring category, the mindshare of Nagios Fusion is 0.2%, up from 0.2% compared to the previous year. The mindshare of vRealize Network Insight is 0.5%, down from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

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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NiteshKumar1

Principle consultant at Infosys

The tool's configuration is easy and artifacts are easily accessible through professional services and the web

The product is highly regarded, and many customers have been using it along with other VMware products like vSphere and VMware vCloud Usage Insight. However, recently, there's been a trend among customers, especially those using VMware for a considerable period, to explore the potential of migrating to the public cloud. The common concern among these customers is how the VMware products will perform in the public cloud environment. Migrating instances from VMware to different platforms is not easy, especially when dealing with many instances across multiple customers. Customers are keen to maintain the functionality of their existing VMware products but prefer to run them on the public cloud instead of on-premise servers. Our clients for vRealize Network Insight are enterprise businesses. I rate it a nine out of ten.

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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

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

"It's very easy to manage and monitor it."

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

"It is easier for client installation, and the configurations are doable even for a newcomer in the field."

"A lot of time is saved when you use this type of software solution for the network. We have moved systems into the new data center and the servers and systems are much faster because of the very low latency between virtual machines."

"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."

"The solution has helped improve our organization by directing the network traffic using SDN."

"I find that the interface of most VMware products is very similar, which I consider an advantage due to its ease of use compared to other tools like Splunk."

"One of the most valuable features is the ability to look at the traffic flows, to look at NetFlow data."

"We haven't had any complaints about the stability of the solution or heard of any issues. None of our clients have mentioned running into bugs or glitches. There haven't been crashes."

"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."

"The most valuable feture is NetFlow to help us understand how VMs communicate with each other over ports that are known and ports that are also unknown to us. Our company is a security company, so it's very important for us to know exactly which VMs are doing what at all times."

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."

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

"Adding application performance monitoring to the product alongside infrastructure monitoring would make it a more complete and useful solution."

"In future iterations of this solution, there is a desire for more seamless integration with other monitoring software."

"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."

"There is room for improvement when it comes to pricing because we pay here in Brazil, and all the costs are based on the dollar."

"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."

"I would like to see application identification. That would be cool."

"Since Broadcom acquired VMware, it has been experiencing challenges. Many sales processes are not well defined."

"The compatibility with each and every component of the infrastructure is the main thing that I am looking for. I would like them to make sure that it's compatible with different kinds of storage systems, etc. I have seen the compatibility list. I feel it can be more compatible than it is right now."

"I would like to see more interoperability on the firewall and low balancer sides."

"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."

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."

"It has brought more money into our company."

"The solution has reduced the time that we spend on other products. For example, with NSX, we were able to quickly find things that we would normally spend days trying to figure out."

"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."

"They should include the product in NSX because it's important to have it for deployment."

"vRealize Network Insight is expensive."

"We have spent less time investigating network flows, so it is absolutely cost-effective."

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

More vRealize Network Insight pricing and cost advice

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Top Industries

By visitors reading reviews

No data available

Computer Software Company

15%

Financial Services Firm

15%

Manufacturing Company

Healthcare Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

What do you like most about Nagios Fusion?

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

See all answers

What needs improvement with Nagios Fusion?

In future iterations of this solution, there is a desire for more seamless integration with other monitoring software.

See all answers

What advice do you have for others considering Nagios Fusion?

Overall, I would rate it eight out of ten.

See all answers

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?

Broadcom is known for increasing product prices, making them expensive compared to what people used to pay. I liken the subscription model to not truly owning what you pay for.

See all answers

What needs improvement with vRealize Network Insight?

Right now, I do not see a specific area for improvement. My main concern is understanding the intentions of Broadcom, which has acquired VMware. Broadcom should improve by going back to what was wo...

See all answers

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Product Reports

Buyer's Guide

IT Infrastructure Monitoring

June 2025

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Buyer's Guide

vRealize Network Insight

June 2025

Download vRealize Network Insight product report

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.

VMware

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

July 2025

Free Report: Nagios Fusion vs. vRealize Network Insight

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