NETSCOUT nGeniusONE 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 #29 with an average rating of 8.7. Nagios holds a 1.9% mindshare in NMS, compared to NETSCOUT’s 1.2% mindshare. Additionally, 80% of Nagios users are willing to recommend the solution, compared to 94% of NETSCOUT users who would recommend it.

Nagios Core

Read 51 Nagios Core reviews

4,463 Views
3,749 Comparison Views

80% willing to recommend

NETSCOUT nGeniusONE

Read 51 NETSCOUT nGeniusONE reviews

3,630 Views
2,650 Comparison Views

94% willing to recommend

Nagios Core

NETSCOUT nGeniusONE

Comparison Buyer's Guide

Download the report

Executive SummaryUpdated on Oct 10, 2024

NETSCOUT nGeniusONE and Nagios Core compete in the network monitoring and analysis space. NETSCOUT nGeniusONE seems to have the upper hand with advanced traffic analysis features.

Features: NETSCOUT nGeniusONE provides robust packet inspection, NetFlow traffic analysis, and real-time communication monitoring. Nagios Core offers strong monitoring capabilities, flexibility with custom plugins, and is open-source.

Room for Improvement: NETSCOUT nGeniusONE could benefit from a more user-friendly interface, reduced reliance on physical appliances, and better integration. Nagios Core needs a simpler installation and configuration process, enhanced reporting functionality, and a more intuitive GUI.

Ease of Deployment and Customer Service: NETSCOUT nGeniusONE offers on-premises and hybrid deployments but may require ongoing support from engineers. Nagios Core's open-source nature provides flexibility yet involves a steeper learning curve without professional support.

Pricing and ROI: NETSCOUT nGeniusONE requires a significant investment and careful planning for ROI. Nagios Core is free, aside from potential implementation and support costs, offering a cost-effective solution for knowledgeable users.

To learn more, read our detailed NETSCOUT nGeniusONE vs. Nagios Core Report (Updated: December 2025).

Buyer's Guide

NETSCOUT nGeniusONE vs. Nagios Core

December 2025

Download the complete report

Helped 881,176 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:

ROI

Sentiment score

8.8

Nagios Core reduces downtime and costs with quick alerts, providing full ROI and eliminating expensive monitoring tools.

Sentiment score

7.0

NETSCOUT nGeniusONE boosts productivity by speeding up troubleshooting, enhancing network visibility, reducing downtime, and improving customer satisfaction.

No quotes available

For more quotes and insights, download the Nagios Core report

No quotes available

For more quotes and insights, download the NETSCOUT nGeniusONE report

Customer Service

Sentiment score

5.1

Nagios Core relies on community support, praised for stability and resources, but lacks official help compared to Nagios XI.

Sentiment score

5.9

NETSCOUT nGeniusONE's customer service is competent but varies by tier; onsite support is valued despite high costs and limited resources.

No quotes available

For more quotes and insights, download the Nagios Core report

The distributor's support is rated an eight out of ten, indicating room for improvement in SLA handling.

reviewer2598618

System Integrator at a construction company with 11-50 employees

They need to work on their response time and overall competence.

Mohammed Hassan

Regional Director at iSecureMind

I am actually happy with technical support from NETSCOUT.

EdwardShim

General Manager at MOCOMSYS

For more quotes and insights, download the NETSCOUT nGeniusONE report

Scalability Issues

Sentiment score

6.7

Nagios Core shows scalability for large networks but may need customizations and integrations for distributed environments.

Sentiment score

8.0

NETSCOUT nGeniusONE is scalable, with strengths in virtual expansion but limited by hardware restrictions for some users.

The solution is scalable.

Husham Yaqoob

Senior System Administrator at Interactive Group

For more quotes and insights, download the Nagios Core report

It is not similar to software solutions Datadog or Dynatrace where they can easily add agents without problems.

EdwardShim

General Manager at MOCOMSYS

The solution is highly scalable and accommodates the growth needs effectively.

reviewer2598618

System Integrator at a construction company with 11-50 employees

For more quotes and insights, download the NETSCOUT nGeniusONE report

Stability Issues

Sentiment score

8.2

Nagios Core is highly stable and reliable with minimal footprint, supporting extensive monitoring without network burden.

Sentiment score

8.1

NETSCOUT nGeniusONE is stable and robust, with rare upgrade issues and strong support, earning high user satisfaction.

I tried many other solutions at work, however, in terms of Nagios, I haven't seen any disruption or downtime.

Husham Yaqoob

Senior System Administrator at Interactive Group

For more quotes and insights, download the Nagios Core report

I rate the stability of NETSCOUT nGeniusONE as ten out of ten since we have not experienced any escalations or downtime issues from the end user's side.

reviewer2598618

System Integrator at a construction company with 11-50 employees

Customers are more sensitive about NETSCOUT nGeniusONE's upgrades because it has hardware.

EdwardShim

General Manager at MOCOMSYS

Datadog is more stable than NETSCOUT nGeniusONE, being a SaaS-based solution compared to on-prem solutions like NETSCOUT.

Mohammed Hassan

Regional Director at iSecureMind

For more quotes and insights, download the NETSCOUT nGeniusONE report

Room For Improvement

Nagios Core needs a more intuitive interface, better scalability, and features like enhanced reporting and integration with modern tools.

NETSCOUT nGeniusONE requires interface improvements, better integration, cost reduction, and enhanced features to increase appeal and competitiveness.

No quotes available

For more quotes and insights, download the Nagios Core report

Customers want to have service assurance, including NPM and APM, from one vendor.

Mohammed Hassan

Regional Director at iSecureMind

Comparing this to a vendor like Cisco, who provides any component next business day, NETSCOUT nGeniusONE took a long time.

Hasan Toffaha

Newwork And Collaboration Supervisor at Nafeza

Many big companies Samsung and Hyundai try to build their own monitoring solutions using open-source tools and their own engineers, though it has not been successful.

EdwardShim

General Manager at MOCOMSYS

For more quotes and insights, download the NETSCOUT nGeniusONE report

Setup Cost

Nagios Core is a free, cost-effective open-source tool, but requires Linux expertise and incurs hosting and maintenance costs.

NETSCOUT nGeniusONE is costly but offers reliable value and flexibility, necessitating careful budgeting for its comprehensive functionality.

No quotes available

For more quotes and insights, download the Nagios Core report

The cost depends on the size of the customer, as sizing controls the pricing.

Mohammed Hassan

Regional Director at iSecureMind

Regarding its high price, I give NETSCOUT nGeniusONE a seven.

Hasan Toffaha

Newwork And Collaboration Supervisor at Nafeza

For more quotes and insights, download the NETSCOUT nGeniusONE report

Valuable Features

Nagios Core provides flexible, low-resource monitoring with customization, automation, efficient alerts, and integration support for reliable IT performance visibility.

NETSCOUT nGeniusONE offers real-time traffic intelligence, simplified visibility, and efficient network performance analysis with user-friendly dashboards.

You can monitor anything.

Husham Yaqoob

Senior System Administrator at Interactive Group

For more quotes and insights, download the Nagios Core report

The capability of real-time traffic intelligence is also very useful because it allows for the comparison between real-time and historical packet levels.

Mohammed Hassan

Regional Director at iSecureMind

The real-time insights that NETSCOUT nGeniusONE provides are very helpful.

Hasan Toffaha

Newwork And Collaboration Supervisor at Nafeza

NETSCOUT is focusing on network monitoring, specifically packet analysis, which sets them apart.

EdwardShim

General Manager at MOCOMSYS

For more quotes and insights, download the NETSCOUT nGeniusONE report

Categories and Ranking

Nagios Core

Ranking in Network Monitoring Software

10th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (11th)

NETSCOUT nGeniusONE

Ranking in Network Monitoring Software

29th

Average Rating

8.2

Reviews Sentiment

6.8

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of January 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 nGeniusONE is 1.2%, down from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Market Share Distribution
Product	Market Share (%)
Nagios Core	1.9%
NETSCOUT nGeniusONE	1.2%
Other	96.9%

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.

Read full review

EdwardShim

General Manager at MOCOMSYS

Offers detailed network monitoring but requires improvement in deployment complexity and pricing

The price is really high, making it difficult for many financial companies to purchase immediately; it will take time for them to afford any budget for the purchase. The traffic data correlation feature's effectiveness with performance issues for clients remains uncertain as there are questions that need to be addressed through engineers regarding how many customers are actually using it. Regarding pricing and value for money, while the solution has the potential to save time and money for clients in the long term, monitoring solutions for performance management or network monitoring do not cause immediate damage to a company. It could lead to damage over time, but financial and management teams typically cannot see the immediate crisis. This is why many big companies Samsung and Hyundai try to build their own monitoring solutions using open-source tools and their own engineers, though it has not been successful.

Read full review

See which vendors are best for you

Use our free recommendation engine to learn which Network Monitoring Software solutions are best for your needs.

See recommendations

881,176 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

11%

Manufacturing Company

10%

Comms Service Provider

Government

Financial Services Firm

11%

Computer Software Company

11%

Manufacturing Company

10%

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	22

By reviewers
Company Size	Count
Small Business	14
Midsize Enterprise	5
Large Enterprise	37

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...

See all answers

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?

I would say if it’s an ISP that will build a scrubbing center, Netscout/Arbor is a good solution. In all other solutions, Imperva is a great choice.

See all answers

What do you like most about NETSCOUT nGeniusONE?

Stability-wise, I rate the solution a ten out of ten.

See all answers

What is your experience regarding pricing and costs for NETSCOUT nGeniusONE?

Regarding its high price, I give NETSCOUT nGeniusONE a seven.

See all answers

Comparisons

Icinga vs Nagios Core

Compared 11% of the time

Zabbix vs Nagios Core

Compared 7% of the time

Nagios XI vs Nagios Core

Compared 7% of the time

LibreNMS vs Nagios Core

Compared 6% of the time

Centreon vs Nagios Core

Compared 5% of the time

More Nagios Core Competitors

SolarWinds NPM vs NETSCOUT nGeniusONE

Compared 10% of the time

Dynatrace vs NETSCOUT nGeniusONE

Compared 8% of the time

ThousandEyes vs NETSCOUT nGeniusONE

Compared 7% of the time

Gigamon Deep Observability Pipeline vs NETSCOUT nGeniusONE

Compared 7% of the time

Datadog vs NETSCOUT nGeniusONE

Compared 5% of the time

More NETSCOUT nGeniusONE Competitors

Product Reports

Buyer's Guide

Nagios Core

January 2026

Download Nagios Core product report

Buyer's Guide

NETSCOUT nGeniusONE

January 2026

Download NETSCOUT nGeniusONE product report

Also Known As

No data available

NETSCOUT nGenius, nGeniusONE

Overview

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

Nagios

The nGenius Real-Time Monitor software provides you with tools to monitor and display information about your network both historically and in real time. The nGenius Real-Time Monitor software allows you to understand your current network usage and to plan for future needs. It also allows you to proactively troubleshoot problem areas in your network.

NETSCOUT

Sample Customers

Airbnb, Cisco, PayPal, FanDuel

Cerner Corporation

Buyer's Guide

NETSCOUT nGeniusONE vs. Nagios Core

December 2025

Free Report: NETSCOUT nGeniusONE vs. Nagios Core

Find out what your peers are saying about NETSCOUT nGeniusONE vs. Nagios Core and other solutions. Updated: December 2025.

DOWNLOAD NOW

881,176 professionals have used our research since 2012.

See our NETSCOUT nGeniusONE vs. Nagios Core report.

See our list of best Network Monitoring Software vendors.

We monitor all Network Monitoring Software reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.