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Nagios XI vs OptiView XG [EOL] comparison

Why PeerSpot?
Nagios and NETSCOUT are both solutions in the Network Monitoring Software category. Additionally, 83% of Nagios users are willing to recommend the solution, compared to 89% of NETSCOUT users who would recommend it.
Nagios XI
Read 58 Nagios XI reviews
  • 16,915 Views
  • 11,333 Comparison Views
83% willing to recommend
OptiView XG [EOL]
Read 38 OptiView XG [EOL] reviews
    89% willing to recommend
     

    Comparison Buyer's Guide

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    Executive Summary
    We performed a comparison between Nagios XI and OptiView XG [EOL] based on real PeerSpot user reviews.

    Find out what your peers are saying about Zabbix, Datadog, SolarWinds and others in Network Monitoring Software.

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    Network Monitoring Software
    October 2026
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    Helped 918,957 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 XI
    Average Rating
    8.0
    Reviews Sentiment
    6.8
    Number of Reviews
    58
    Ranking in other categories
    Network Monitoring Software (16th), Server Monitoring (7th), IT Infrastructure Monitoring (11th), Cloud Monitoring Software (19th)
    OptiView XG [EOL]
    Average Rating
    8.6
    Number of Reviews
    38
    Ranking in other categories
    No ranking in other categories
     

    Featured Reviews

    Emmanuel Appiah Boateng - PeerSpot reviewer
    Emmanuel Appiah Boateng
    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.
    Read full review
    MW
    Mark_Walker
    President at Bitwise Micro
    A valuable, impressive, and portable product that saves time and has great scalability and stability
    It just saves time. We have run into situations where contractors come in, and they plug in a WiFi device that is handing out DHCP addresses, which affects the rest of the network. To be able to quickly identify from where the problem is originating, you need a network tool that can identify the device that is doing this. It just brings into clear focus the exact issue when there is a problem or outage. When there is a crisis and you've several people wanting to know an estimate of when things are going to be back up and running again, you need to have answers. I have been at places that didn't have a tool like that. I know one place that had an outage for almost a week, and it was craziness. It turned out to be just a bad cable. That's all it was. They were having trouble with their email server, which was an on-premise email server, but emails were taking six hours to appear. The whole problem was because of a bad network cable. When I plugged in the Fluke analyzer, it analyzed and told me immediately that there were transmission errors on this one port from one switch. It told me this within 10 minutes. It is an incredible product.
    Read full review

    Quotes from Members

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

    Pros

    "The most useful aspect of this solution is the ability to customize it for the client agent."
    "The most valuable feature is the dashboard, where I can have a single screen that provides a summary for hundreds of servers."
    "This is a very good solution and it is simple to use, for any company."
    "Nagios XI is easy to install, which sets it apart from other open-source solutions I've tried."
    "Overall, it's a powerful system."
    "It's a monitoring agent. It's designed to do one thing. Its most valuable feature is its monitoring."
    "In my view this product is very good value for money when compared with other commercially provided monitoring solutions."
    "You can save a lot of time using Nagios monitoring because otherwise you need to check all of your services or system one by one."
    More Nagios XI pros
    "The pre-site survey and the AirMagnet site survey help my company in pre-sales and post-sales."
    "It has streamlined and simplified troubleshooting complex networking problems that would be nearly impossible to uncover with other products."
    "Technical support was awesome; they were quick to respond, very knowledgeable, and kept us up to date on the status."
    "I've switched to Fluke Networks products because having an all-in-one tool is more convenient, and the way information is presented makes it easier to share knowledge."
    "The packet capture feature is valuable when there's a troubleshooting issue, and since this is a data center, there are thousands of servers and users."
    "When we do a capture, it gives us the details of where the problem is and what it could be."
    "We were able to find out that there was actually double acknowledgments coming from one of the devices, and we were able to share that with the coders and ultimately get it fixed."
    "We switched to OptiView to be a little bit more flexible."
    More OptiView XG [EOL] pros
     

    Cons

    "It is really difficult to integrate Nagios XI with another system to generate logs and alert our management of failures in security infrastructure."
    "There's room for improvement in the visibility, and in the ability to extract information. Stuff like this should be more simple."
    "Nagios provides most of the features by default, however to add more services to it, it requires additional plugins which require little effort on administrative end."
    "Initially, we encountered problems during the setup as some errors were noted due to a few prerequisites not being fulfilled and having some configuration files to edit and plugins to add."
    "The scalability of Nagios XI is scalable. However, it is not easy to do."
    "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."
    "The product's stability could be even better."
    "They need more documentation for the plugins."
    More Nagios XI cons
    "Hardware is unreliable. It's already crashed on me several times."
    "Its price can be improved. Their support can also be improved a little bit. In terms of features, it did everything I wanted it to do. With more features, I would have to start installing network agents or something else, and I don't want to have to install anything. This was the value for me about this device."
    "Ease of updating, automated updating. Basically, based on the unit right now, maybe get it to be a little bit smaller, lighter."
    "Also, the overall weight of the product is a lot to carry around for a long period of time."
    "It can’t scale to even one user because it crashes when you're using the AirMagnet survey tool, or even running reports."
    "The reports I got back from the guys I sent to training said the guy spent more time telling stories, war stories and that type, rather than actual training about the product."
    "That would probably be something I'd want to add on."
    "The licensing cost needs to improve since it is very expensive, especially the licensing and maintenance costs."
    More OptiView XG [EOL] cons
     

    Pricing and Cost Advice

    "The pricing is high with separate licensing for the product and support."
    "Licensing costs are reasonable."
    "As it is not an agentless tool, I think it is expensive."
    "Nagios XI is an expensive solution."
    "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."
    "This solution is very expensive, at approximately $5,000 USD when I purchased it, which is why I haven't upgraded my version in several years."
    "The licensing fees for this solution are approximately $3,000 USD per year."
    "For the cost of the commercial product and support, and taking into account the open source characteristics of it, I believe it is difficult to a better value."
    More Nagios XI pricing and cost advice
    "Its price was a bit excessive. The device that I had died. It is under warranty, and they want $20,000 for another one. I just don't want to spend that kind of money, so I'm trying to find an alternate solution. They have annual maintenance on it, which probably was 10% a year, so it all starts to add up."
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    Comparison Review

    it_user174738 - PeerSpot reviewer
    it_user174738
    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…
    Read full review
     

    Top Industries

    By visitors reading reviews
    Comms Service Provider
    10%
    Outsourcing Company
    9%
    Financial Services Firm
    8%
    Manufacturing Company
    8%
    Outsourcing Company
    19%
    Construction Company
    11%
    Financial Services Firm
    7%
    Manufacturing 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
    Small Business7
    Midsize Enterprise8
    Large Enterprise26
     

    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.
    See all answers
    What needs improvement with Nagios XI?
    The user interface needs improvement. Many tools have poor user interfaces, making them hard to manage and navigate.
    See all answers
    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...
    See all answers
    Ask a question
    Earn 20 points
     

    Comparisons

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    Compared 4% of the time
    Opsview vs Nagios XI Logo
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    Compared 3% of the time
    SCOM vs Nagios XI Logo
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    Compared 2% of the time
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    Compared 18% of the time
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    Compared 17% of the time
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    NetAlly EtherScope nXG vs OptiView XG [EOL]
    Compared 14% of the time
    Zabbix vs OptiView XG [EOL] Logo
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    Compared 11% of the time
    More OptiView XG [EOL] Competitors
     

    Product Reports

    Buyer's Guide
    Nagios XI
    October 2026
    Nagios XI reportDownload Nagios XI product report
    Buyer's Guide
    OptiView XG [EOL]
    October 2026
    OptiView XG [EOL] reportDownload OptiView XG [EOL] product report
     

    Overview

    Nagios XI offers powerful monitoring with customizable scripts and extensive plugin support, making it ideal for those overseeing IT services and infrastructure. It features an intuitive dashboard, real-time alerts, and comprehensive device support, ensuring flexible and scalable network monitoring.

    Nagios XI stands out due to its robust monitoring capabilities, emphasizing flexibility and vast plugin support for custom scripts and service monitoring. Users value its intuitive dashboard for real-time alerts and device compatibility, which simplifies installation and enhances scalability and network visualization. Its open-source foundation assures performance and stability, while a setup wizard aids initial configuration. Despite its strengths, Nagios XI could benefit from a more user-friendly interface, enhanced installation processes, better network map customization, improved cloud integration, and alerting capabilities. Users often face hurdles with its scalability, configuration management, and reporting flexibility, and enterprise clients desire improved dashboards, clustering support, and AI integration.

    What are some key features of Nagios XI?
    • Monitoring Capabilities: Offers comprehensive monitoring for networks, servers, and IT services.
    • Plugin Support: Supports a wide range of plugins, enabling custom script creation for diverse monitoring needs.
    • Intuitive Dashboard: Provides real-time alerts and a user-friendly display.
    • Scalability: Supports growth with robust scalability and network visualization capabilities.
    • Open-Source Performance: Benefits from an open-source framework, ensuring performance and stability.
    What are the potential benefits and ROI?
    • Comprehensive Monitoring: Enables thorough oversight of IT services and infrastructure.
    • Customizability: Allows for tailored solutions via plugins and scripts.
    • Real-Time Alerts: Provides immediate notification of system issues.
    • Ease of Installation: Simplified processes through the setup wizard.
    • Scalable Solutions: Adapts to growing organizational needs, enhancing long-term use and support.

    Nagios XI is widely used in monitoring network servers, infrastructure environments, and IT services. Organizations rely on Nagios XI for comprehensive monitoring of hardware, memory storage, CPUs, databases, services, and applications. It's frequently implemented to manage multiple servers, routers, switches, modems, and power supplies, and integrates with virtual and cloud servers. By supporting custom scripts and data collection, it allows for effective alerts and notifications for network and equipment statuses across various sectors.

    Nagios

    OptiView XG is the first network analysis tablet designed specifically for the network engineer. It combines critical functions necessary to automate root-cause analysis of both wired and wireless network performance issues – whether network or application related to reduce time for problem identification. OptiView XG supports repeatable, effective troubleshooting – whether pre- or post-deployment.

    NETSCOUT
     

    Sample Customers

    Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.
    XG is used in all industries. Example customers include: Republic National Distributing Company, Titelive, CitiGroup, Los Angeles Unified School District, Saudi German Hospital, DeKalb County Schools, Valdosta State University, The Everett Clinic, Bio-Reference, Miami-Dade Library, Mitel, Borsa Istanbul, Cimarex, Air National Guard Lowndes County, High Point City, Carrollton City Schools, Kern County, Pruitt Communications and Bosch Group.
    Buyer's Guide
    Network Monitoring Software
    October 2026
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