NETSCOUT InfiniStreamNG vs Nagios Core comparison

Nagios and NETSCOUT are both solutions in the Network Monitoring Software category. Nagios is ranked #10 with an average rating of 8.7, while NETSCOUT is ranked #77. Nagios holds a 1.9% mindshare in NMS, compared to NETSCOUT’s 0.5% mindshare. Additionally, 80% of Nagios users are willing to recommend the solution, compared to 92% of NETSCOUT users who would recommend it.

Nagios Core

Read 51 Nagios Core reviews

5,494 Views
4,505 Comparison Views

80% willing to recommend

NETSCOUT InfiniStreamNG

Read 13 NETSCOUT InfiniStreamNG reviews

1,249 Views
1,187 Comparison Views

92% willing to recommend

Nagios Core

NETSCOUT InfiniStreamNG

Comparison Buyer's Guide

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Executive SummaryUpdated on Oct 10, 2024

Nagios Core and NETSCOUT InfiniStreamNG compete in network performance monitoring. Nagios Core is favored for its affordability while NETSCOUT InfiniStreamNG stands out for its comprehensive feature set, providing justified investment returns.

Features: Nagios Core supports robust network monitoring, alerting capabilities, and benefits from numerous community plugins. NETSCOUT InfiniStreamNG offers advanced traffic analysis, packet capture capabilities, and application performance management.

Room for Improvement: Nagios Core could improve with easier setup processes and more formal support channels. Its customization options might seem daunting for users seeking out-of-box solutions. NETSCOUT InfiniStreamNG might enhance its offering by lowering entry-level pricing, expanding community plugin options, and simplifying some in-depth features for greater accessibility.

Ease of Deployment and Customer Service: Nagios Core requires a potentially complex setup with community-driven support, considered less formal. NETSCOUT InfiniStreamNG provides streamlined deployment and professional support services, emphasizing enterprise-grade customer assistance.

Pricing and ROI: Nagios Core has a minimal setup cost, appealing to budget-conscious firms while offering a high ROI via low operating expense. NETSCOUT InfiniStreamNG has a higher initial investment, justified by extensive insights and analytics, delivering substantial ROI for organizations needing detailed performance data.

To learn more, read our detailed NETSCOUT InfiniStreamNG vs. Nagios Core Report (Updated: March 2026).

Buyer's Guide

NETSCOUT InfiniStreamNG vs. Nagios Core

March 2026

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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 Core

Ranking in Network Monitoring Software

10th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (10th)

NETSCOUT InfiniStreamNG

Ranking in Network Monitoring Software

77th

Average Rating

8.4

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of March 2026, in the Network Monitoring Software category, the mindshare of Nagios Core is 1.9%, down from 3.0% compared to the previous year. The mindshare of NETSCOUT InfiniStreamNG is 0.5%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.9%
NETSCOUT InfiniStreamNG	0.5%
Other	97.6%

Network Monitoring Software

Featured Reviews

Husham Yaqoob

Senior System Administrator at Interactive Group

Monitoring solution provides comprehensive visibility across IT infrastructure

The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

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Michael Gideon Genita

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…

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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 has made the life of the network operations staff more proactive in managing the resources of the infrastructure. It prevents disasters long before they can take place."

"The most valuable feature depends on the project; it's great if you need to check to ensure a service is running 24/7, I can use the full solution for free, and it's flexible."

"The solution is quite efficient."

"Extensibility is good as this makes it easy to write checks on your own."

"The notifications are definitely one of the most valuable features of Nagios Core. We know what to look for and what to expect when things are down."

"We have the ability right now to see and create reports to tell whether or not we're meeting our SLAs on our production servers, through it."

"I like that it's very simple to install, easy to manage and deploy, and easy to use for monitoring."

"Open source and very flexible, with a large ecosystem of tools and custom monitors built up around Nagios."

More Nagios Core pros

"It is very rock solid. We hardly have any hardware issues."

"It is very rock solid, and we hardly have any hardware issues."

"The most valuable features are speed and cost."

"The real-time troubleshooting and application segregation that you can do within it."

"The solution has helped to increase application and network uptime, reduced our mean time to repair significantly for application and network issues, and cut our overall troubleshooting time from an hour down to five minutes."

"We are attracting customers in good sized numbers as we advertise and market this solution."

"The packet flow switch is the most valuable aspect of the solution."

"It has cut our troubleshooting down by days. Once we have a product in place, we show people examples of how it can streamline their troubleshooting process."

More NETSCOUT InfiniStreamNG pros

Cons

"I believe Nagios Core will need to provide an option for big data platforms in the future."

"The initial setup process could be easier."

"It's not that easy to install the product itself. Also, the UI is a bit hard for regular users to navigate through."

"Would benefit from aggregations if a particular server goes down."

"Application level monitoring is limited."

"Nagios Core can improve the graphical interface, it would make things a little easier."

"The core version is no match for the XI version."

"Lessening the price point would be an improvement."

More Nagios Core cons

"The NetFlow Collectors could handle more flows per minute."

"I would like to see an improved level of stitching between IPs."

"It can be scalable. It just costs too much."

"I'd like them to make the product more user-friendly."

"The technology goes end-of-life on us every year, which is why I am looking forward to vSTREAM."

"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."

"The monitoring and reporting tool needs improvement."

"The scalability has some limitations and quirks to it. I would like to be able to upgrade rather than replace the whole thing."

More NETSCOUT InfiniStreamNG cons

Pricing and Cost Advice

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

"Nagios Core is free to use."

"We are using the free version of Nagios Core."

"The enterprise version has technical support. The version we are using is free."

"It's free."

"Nagios Core is an open source solution, and there are no licensing fees."

"Lessening the price point would be an improvement."

"We are using the open-source, unpaid version."

More Nagios Core pricing and cost advice

"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."

"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."

"To capture more with the solution that we bought, you have to buy another InfiniStreamNG, and there are only four ports in the back."

"This product could be cheaper."

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Top Industries

By visitors reading reviews

Manufacturing Company

10%

Comms Service Provider

10%

Computer Software Company

Government

Manufacturing Company

17%

Financial Services Firm

12%

Construction Company

Educational Organization

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	23

By reviewers
Company Size	Count
Midsize Enterprise	1
Large Enterprise	8

Questions from the Community

What is your experience regarding pricing and costs for Nagios Core?

Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.

See all answers

What needs improvement with Nagios Core?

The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.

See all answers

What is your primary use case for Nagios Core?

I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...

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Comparisons

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Compared 7% of the time

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Compared 6% of the time

Zabbix vs Nagios Core

Compared 5% of the time

Centreon vs Nagios Core

Compared 5% of the time

Nagios XI vs Nagios Core

Compared 5% of the time

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Riverbed NPM+ vs NETSCOUT InfiniStreamNG

Compared 18% of the time

Flowmon vs NETSCOUT InfiniStreamNG

Compared 15% of the time

Cisco Secure Network Analytics vs NETSCOUT InfiniStreamNG

Compared 13% of the time

cPacket cClear vs NETSCOUT InfiniStreamNG

Compared 11% of the time

NETSCOUT vSTREAM vs NETSCOUT InfiniStreamNG

Compared 11% of the time

More NETSCOUT InfiniStreamNG Competitors

Product Reports

Buyer's Guide

Nagios Core

March 2026

Download Nagios Core product report

Buyer's Guide

NETSCOUT InfiniStreamNG

March 2026

Download NETSCOUT InfiniStreamNG product report

Also Known As

No data available

InfiniStreamNG, NETSCOUT ISNG, Infinistream

Overview

This is IT infrastructure monitoring's industry-standard, open-source core. Free without professional support services.

Nagios

NETSCOUT’s new ISNG platform harnesses the power of IP intelligence by mining traffic in real-time to deliver accurate and actionable data for service assurance, cybersecurity and business intelligence applications. The InfiniStreamNG platform fully supports the nGeniusONE and Iris application suites.

NETSCOUT

Sample Customers

Airbnb, Cisco, PayPal, FanDuel

U.S. Department of Defense

Buyer's Guide

NETSCOUT InfiniStreamNG vs. Nagios Core

March 2026

Free Report: NETSCOUT InfiniStreamNG vs. Nagios Core

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