ClearSight Analyzer vs Nagios Core comparison

NETSCOUT and Nagios are both solutions in the Network Monitoring Software category. NETSCOUT is ranked #90, while Nagios is ranked #10 with an average rating of 8.7. NETSCOUT holds a 0.4% mindshare in NMS, compared to Nagios’s 1.9% mindshare. Additionally, 100% of NETSCOUT users are willing to recommend the solution, compared to 80% of Nagios users who would recommend it.

ClearSight Analyzer

Read 2 ClearSight Analyzer reviews

808 Views
719 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

5,494 Views
4,505 Comparison Views

80% willing to recommend

ClearSight Analyzer

Nagios Core

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Executive SummaryUpdated on Oct 10, 2024

ClearSight Analyzer and Nagios Core are competitors in the network monitoring category. ClearSight Analyzer may have the upper hand in intuitive operations, while Nagios Core's open-source nature and customization potential make it a strong contender.

Features: ClearSight Analyzer provides packet-level analysis, real-time data processing, and detailed insights into network traffic. Nagios Core is notable for its plugin architecture, flexibility, and extensive monitoring capabilities beyond network traffic.

Room for Improvement: ClearSight Analyzer could benefit from enhanced customization options, broader third-party integration, and improved open-source engagement. Nagios Core may see improvements in user interface intuitiveness, simplified setup processes, and refined out-of-the-box functionality.

Ease of Deployment and Customer Service: ClearSight Analyzer offers an easy deployment experience with comprehensive direct support, beneficial for immediate assistance. Nagios Core requires more technical expertise but benefits from vibrant community support and extensive documentation for troubleshooting.

Pricing and ROI: ClearSight Analyzer involves a higher upfront cost, promising significant returns due to its in-depth analysis capabilities. Nagios Core, being open-source, is cost-effective initially but may incur costs for customization and support, providing value through cost savings and flexibility.

To learn more, read our detailed Network Monitoring Software Report (Updated: March 2026).

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Network Monitoring Software

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

ClearSight Analyzer

Ranking in Network Monitoring Software

90th

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

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)

Mindshare comparison

As of March 2026, in the Network Monitoring Software category, the mindshare of ClearSight Analyzer is 0.4%, up from 0.1% compared to the previous year. The mindshare of Nagios Core is 1.9%, down from 3.0% 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%
ClearSight Analyzer	0.4%
Other	97.7%

Network Monitoring Software

Featured Reviews

DAVID-TAYLOR

Senior Network Engineer at Montgomery College

Shows question being asked, breaks it down and it'll just show you who's not answering

I wouldn't want the interface to go towards the web because they did have a version that was inside of the TruView product. It was more web-based and, to me, the web-based applications lose the robustness of the intimacy of a true character interface. I liked that they were on that path and I hope that they stay on that path because it just looks like it's a better product. I would like to see a multi-user version where you can have a launch platform and, potentially, instead of buying six licenses you buy 12 seats or something like that. From a centralized platform, you could have multiple users using that particular product in a series of different ways. That's what I'd like to see, rather than having everybody running a standalone one on their own workstation.

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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

Quotes from Members

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

Pros

"This is the best protocol analyzer I've used and I've used some from WildPackets and quite a few other places."

"What ClearSight will do is it actually maps out the conversation for you."

"Nagios Core is stable."

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

"The solution is very complete and mostly easy to manage."

"This is a fit for purpose product which means that if you have a definite list of requirements and are not willing, or unable, to spend money on big enterprise tools, then Nagios is a tool to go to."

"I like the way the solution sends alerts and how it keeps on escalating them."

"The application performance monitoring feature is valuable."

"The most valuable feature of Nagios Core is the ability to check the availability of the server for network connectivity. Additionally, the interface is good."

"The most valuable features are the reports and the way it generates the report in a graphical manner."

More Nagios Core pros

Cons

"I would like to see a multi-user version where you can have a launch platform and, potentially, instead of buying six licenses you buy 12 seats or something like that."

"I was upset when they sold the product to NETSCOUT."

"I like to have the option to configure Nagios using the web interface."

"Setup is bit complicated due to the large set of libraries it needs, but this may be because it's open source."

"The NetEase reporting structure needs improvement, especially the availability report, which is weak."

"The alerting mechanism in Nagios Core could be improved."

"Default interface is clunky and slow."

"The initial setup process could be easier."

"The user interface could be more interactive because it is pretty basic."

"It would be nice if it was hosted in cloud. Also, they need to improve the graphs."

More Nagios Core cons

Pricing and Cost Advice

"It was pretty modest because you could get it in different ways. I think the six licenses, at that time, were about $1,000 each. But then again, I work for a school and educators tend to get discounts on things. So maybe it cost us about five or six hundred a copy."

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

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

"The product is cheaply priced."

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

"Lessening the price point would be an improvement."

"We are using the free version."

"It's free."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

No data available

Manufacturing Company

10%

Comms Service Provider

10%

Computer Software Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

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

Questions from the Community

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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

Comparisons

NETSCOUT nGeniusONE vs ClearSight Analyzer

Compared 31% of the time

TruView vs ClearSight Analyzer

Compared 26% of the time

Wireshark vs ClearSight Analyzer

Compared 20% of the time

Cisco Secure Network Analytics vs ClearSight Analyzer

Compared 12% of the time

Observium vs ClearSight Analyzer

Compared 11% of the time

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LibreNMS vs Nagios Core

Compared 7% of the time

Icinga vs Nagios Core

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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Product Reports

Buyer's Guide

Network Monitoring Software

March 2026

Download ClearSight Analyzer product report

Buyer's Guide

Nagios Core

March 2026

Download Nagios Core product report

Overview

Protocol analysis tool for application performance analysis and monitoring. Provides real-time problem identification and statistics.

NETSCOUT

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

Nagios

Sample Customers

Japan Atomic Energy Research Institute

Airbnb, Cisco, PayPal, FanDuel

Buyer's Guide

Network Monitoring Software

March 2026

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