NETSCOUT InfiniStreamNG vs Nagios Core comparison

Nagios and NETSCOUT are both solutions in the Network Monitoring Software category. Nagios is ranked #19 with an average rating of 8.8, while NETSCOUT is ranked #73. Nagios holds a 1.4% 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

8,414 Views
6,815 Comparison Views

80% willing to recommend

NETSCOUT InfiniStreamNG

Read 13 NETSCOUT InfiniStreamNG reviews

2,426 Views
2,305 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: August 2026).

Buyer's Guide

NETSCOUT InfiniStreamNG vs. Nagios Core

August 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

19th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (16th)

NETSCOUT InfiniStreamNG

Ranking in Network Monitoring Software

73rd

Average Rating

8.4

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of August 2026, in the Network Monitoring Software category, the mindshare of Nagios Core is 1.4%, down from 2.7% compared to the previous year. The mindshare of NETSCOUT InfiniStreamNG is 0.5%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.4%
NETSCOUT InfiniStreamNG	0.5%
Other	98.1%

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

"Nagios Core integrates with tools like Splunk, Datadog, or Dynatrace. It is usually used as a feed to provide more technical information about devices or hosts to another system."

"It is fairly easy to set up, and we can monitor pretty much everything we want to."

"The solution's most valuable feature is that it offers proper alerting capabilities."

"The features of Nagios Core that we find most valuable are the plugins we use, we can check the uptime and see how many servers and routers and create groups accordingly."

"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."

"We are using Nagios Core on a VM and it's working very well, even though the specs of the VM are very low because it doesn't require much storage."

"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."

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

More Nagios Core pros

"It has cut our group's troubleshooting time down significantly, e.g., depending on the issue, what would normally take maybe a couple of hours will now take minutes."

"The most valuable features are speed and cost."

"When we have mobile operators who are signal partners, where one is the roaming host and another is the roamer, we are able to see their traffic. Their packets are able to detect if any faults to develop, and at what point they fail."

"The ability to troubleshoot customers' connectivity has been very beneficial."

"We use it for monitoring whenever we update a new circuit or site."

"It helps us to assist our customers to isolate problems. If it is us who is having the problem, then we can use it to streamline the process."

"An issue that used to take days is now fixed within minutes to an hour."

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

More NETSCOUT InfiniStreamNG pros

Cons

"Cloud monitoring is an area for improvement because there aren't too many plugins available."

"It is a bit slow due to latency."

"Generally, it does what I need it to do, but better error reporting would be great."

"We're using the free version, which limits us in terms of the things that we can do."

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

"I would like to see a much better Nagios Manager GUI that can support all type of configuration items, and advance search options."

"Nagios Core could improve by adding a user interface. If you want the user interface you have to use Nagios XI."

"It would be nice if the company offered a sales or contract manager that was dedicated to our company so that we would have some sort of link to Nagios, and if we had issues or questions, we'd be able to contact them directly."

More Nagios Core cons

"The stability depends on who is using the tool, because you only can get as much out of the tool as you put into it. There are a lot of patches for this particular environment, so you have to keep on them. If you lose track of them, then the product is not useful anymore."

"Sometimes, we can't access it."

"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."

"Only problems that we have had are fiber issues going into the TAPs or vSTREAMs, which are usually local site issues."

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

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

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

More NETSCOUT InfiniStreamNG cons

Pricing and Cost Advice

"Nagios Core is a cheap solution."

"We are using the free version."

"It's free."

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

"Most the plugin features are free."

"Nagios Core is free to use."

"Lessening the price point would be an improvement."

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

More Nagios Core pricing and cost advice

"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 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."

"The price is a little high."

"I would like it to be more scalable with less spend."

"This product could be cheaper."

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

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Top Industries

By visitors reading reviews

Comms Service Provider

10%

Manufacturing Company

Financial Services Firm

Construction Company

Manufacturing Company

14%

Construction Company

13%

Outsourcing Company

10%

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	24

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

LibreNMS vs Nagios Core

Compared 6% of the time

Zabbix vs Nagios Core

Compared 5% of the time

Centreon vs Nagios Core

Compared 4% of the time

OpenNMS vs Nagios Core

Compared 4% of the time

Nagios XI vs Nagios Core

Compared 4% of the time

More Nagios Core Competitors

Riverbed NPM+ vs NETSCOUT InfiniStreamNG

Compared 11% of the time

Cisco Secure Network Analytics vs NETSCOUT InfiniStreamNG

Compared 11% of the time

NETSCOUT vSTREAM vs NETSCOUT InfiniStreamNG

Compared 10% of the time

Flowmon vs NETSCOUT InfiniStreamNG

Compared 8% of the time

NIKSUN NetVCR vs NETSCOUT InfiniStreamNG

Compared 7% of the time

More NETSCOUT InfiniStreamNG Competitors

Product Reports

Buyer's Guide

Nagios Core

August 2026

Download Nagios Core product report

Buyer's Guide

NETSCOUT InfiniStreamNG

August 2026

Download NETSCOUT InfiniStreamNG product report

Also Known As

No data available

InfiniStreamNG, NETSCOUT ISNG, Infinistream

Overview

Nagios Core offers a versatile monitoring solution that efficiently manages notifications, reporting, and resource usage. Its open-source architecture provides flexibility and customization options for comprehensive infrastructure health management.

Nagios Core, known for its extensible plugin architecture, proactively enhances infrastructure management with customizable notifications and reliable reporting. Seamlessly integrating various plugins, it offers real-time dashboards and efficient alerting systems for thorough monitoring. Its adaptability and ease of configuration make it popular among users seeking flexible monitoring solutions. However, improvements in the web interface, scalability, performance, and visualization are needed to enhance accessibility. Users seek better alert mechanisms, more robust PDF export features, and simpler setup processes for increased efficiency.

What are the key features of Nagios Core?

Customizable Notifications: Tailor alerts to suit specific needs.
Reliable Reporting: Provides detailed insights into system performance.
Light Resource Usage: Operates efficiently with minimal resource demands.
Extensible Plugin Architecture: Supports a wide range of third-party integrations.
Real-Time Dashboards: Offers instant insights into system health.

What benefits should users expect from Nagios Core?

Flexibility: Allows detailed customization for unique monitoring requirements.
Open-Source Nature: Encourages community-driven enhancements and support.
Integration Capabilities: Facilitates seamless interaction with other tools and platforms.
Adaptability: Supports monitoring across different environments seamlessly.

In many industries, Nagios Core is integral to monitoring infrastructure and services, including cloud servers, applications, and network devices. Users rely on it for issue detection, capacity planning, and maintaining system stability in environments like AWS and on-premise servers. Its capabilities in CPU, memory, and bandwidth monitoring along with alert systems support sectors needing real-time oversight of critical equipment.

Nagios

NETSCOUT InfiniStreamNG delivers fast, cost-efficient network visibility with a single pane of glass view, featuring real-time traffic analysis, dependency mapping, and performance metrics for comprehensive management.

InfiniStreamNG stands out for its real-time insights into network activity, providing a unified platform for managing network components. Its deep packet inspection, scalability, and compatibility make it an essential tool for IT professionals looking to optimize network performance and resolve issues quickly. User-friendly interface enhancements are anticipated for improved usability, alongside early product lifecycle notifications due to extensive certification periods.

What are the key features of NETSCOUT InfiniStreamNG?

Speed: Enhances real-time traffic analysis and performance monitoring.
Network Visibility: Provides a comprehensive view with single pane device management.
Packet Inspection: Supports deep packet inspections for detailed data analytics.
Stability and Scalability: Ensures reliable performance and adapts to varying network sizes.
Compatibility: Seamlessly integrates with other technologies for smooth operations.

What are the benefits and ROI of using NETSCOUT InfiniStreamNG?

Quick Issue Resolution: Identifies and addresses network issues swiftly.
Efficient Utilization: Offers insights for optimizing resource use and network management.
Proactive Monitoring: Facilitates early detection of potential issues to maintain performance.
Application Performance Tracking: Monitors app connectivity and performance effectively.
KPI Evaluation: Provides comprehensive data for informed decision-making.

NETSCOUT InfiniStreamNG is implemented across industries for packet collection and analysis, serving network monitoring and troubleshooting needs. Companies in telecommunications monitor LTE roaming traffic, while financial institutions rely on it for analyzing banking data. It supports application connectivity checks and proactive remote site monitoring, becoming integral in evaluating KPIs and reporting network issues.

NETSCOUT

Sample Customers

Airbnb, Cisco, PayPal, FanDuel

U.S. Department of Defense

Buyer's Guide

NETSCOUT InfiniStreamNG vs. Nagios Core

August 2026

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