ClearSight Analyzer vs Nagios Core comparison

Why PeerSpot?

NETSCOUT and Nagios are both solutions in the Network Monitoring Software category. NETSCOUT is ranked #92, while Nagios is ranked #19 with an average rating of 8.7. NETSCOUT holds a 0.4% mindshare in NMS, compared to Nagios’s 1.3% 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

1,817 Views
1,726 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

9,323 Views
7,458 Comparison Views

80% willing to recommend

ClearSight Analyzer

Nagios Core

Comparison Buyer's Guide

Download the report

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: September 2026).

Buyer's Guide

Network Monitoring Software

September 2026

Download the complete report

Helped 915,341 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

ClearSight Analyzer

Ranking in Network Monitoring Software

92nd

Average Rating

10.0

Number of Reviews

Ranking in other categories

No ranking in other categories

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 (18th)

Mindshare comparison

As of October 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 1.3%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.3%
ClearSight Analyzer	0.4%
Other	98.3%

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.

Read full review

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

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

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

"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've got a medium size distributed system with a lot of locally installed machines, and Nagios provides us with a solid and reliable monitoring solution for these machines."

"The scalability of Nagios Core is very good, we can add as many hosts as we like, and we can work with the concept master and client, making it very scalable and easy to use."

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

"We can get real time statistics of our servers which improves our monitoring."

"Nagios Core is very configurable. Whatever you want, you can do it."

"Provides timely notifications."

"The good thing about Nagios Core is it covers everything."

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."

"The configuration and reporting modules need to be improved."

"A better UI for graphing would make it better. The present graphs are not very friendly and good to see."

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

"The initial setup process could be easier."

"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."

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

"It is a bit slow due to latency."

"This solution is not scalable at all. If you want to add an AI, or if you wanted to monitor different types of metrics, you won't get the most out of it."

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."

"Nagios Core is free to use."

"The solution is expensive."

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

"The product is cheaply priced."

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

"The Nagios Core (PNP4Nagios + Core) is free and can be setup by Netadmin within a few hours. The only additional cost is the cloud server."

"Lessening the price point would be an improvement."

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

More Nagios Core pricing and cost advice

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

915,341 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Construction Company

16%

Comms Service Provider

14%

Healthcare Company

11%

Manufacturing Company

Comms Service Provider

10%

Manufacturing Company

Financial Services Firm

Outsourcing Company

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	24

Questions from the Community

Ask a question

Earn 20 points

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

TruView vs ClearSight Analyzer

Compared 14% of the time

NETSCOUT nGeniusONE vs ClearSight Analyzer

Compared 13% of the time

Wireshark vs ClearSight Analyzer

Compared 6% of the time

Cisco Secure Network Analytics vs ClearSight Analyzer

Compared 5% of the time

Observium vs ClearSight Analyzer

Compared 4% of the time

More ClearSight Analyzer Competitors

LibreNMS vs Nagios Core

Compared 5% of the time

Zabbix vs Nagios Core

Compared 5% of the time

Nagios XI vs Nagios Core

Compared 4% of the time

Centreon vs Nagios Core

Compared 4% of the time

OpenNMS vs Nagios Core

Compared 4% of the time

More Nagios Core Competitors

Product Reports

Buyer's Guide

Network Monitoring Software

September 2026

Download ClearSight Analyzer product report

Buyer's Guide

Nagios Core

September 2026

Download Nagios Core product report

Overview

ClearSight Analyzer offers comprehensive analytics designed for insightful data processing and interpretation. Its use spans across network performance analysis and traffic monitoring, enabling businesses to enhance efficiency and problem-solving capabilities.

Providing a competitive edge in data-driven environments, ClearSight Analyzer stands out with its robust technology, allowing users to dissect complex data streams. It significantly aids in the optimization of network systems, ensuring seamless operations. With its intuitive design and powerful analytics tools, this service facilitates detailed examinations, promoting informed decision-making. Its compatibility with a range of data sources further enhances its utility, making it ideal for tailored applications in different sectors.

What are the standout features of ClearSight Analyzer?

Advanced Data Visualization: Offers intuitive visuals for easier data interpretation.
Real-Time Monitoring: Ensures up-to-date network status insights.
Comprehensive Protocol Analysis: Delivers in-depth examination of network protocols.
Scalability: Adaptable to different network sizes and complexities.

How can ClearSight Analyzer benefit users?

Improved Efficiency: Streamlines data handling and boosts system performance.
Cost-Effective: Reduces operational costs through optimized resource management.
Enhanced Decision-Making: Supports accurate data analysis for better business strategies.

In industries like telecommunications, finance, and healthcare, ClearSight Analyzer aids high-volume data processing, supporting critical operational tasks. Its ability to identify bottlenecks and optimize resources makes it a valuable tool for maintaining high standards of performance and reliability.

NETSCOUT

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

Sample Customers

Japan Atomic Energy Research Institute

Airbnb, Cisco, PayPal, FanDuel

Buyer's Guide

Network Monitoring Software

September 2026

Download Free Report

Find out what your peers are saying about Zabbix, Datadog, SolarWinds and others in Network Monitoring Software. Updated: September 2026.

DOWNLOAD NOW

915,341 professionals have used our research since 2012.

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.