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Nagios Core vs Splunk Observability Cloud comparison

Nagios and Splunk are both solutions in the Network Monitoring Software category. Nagios is ranked #12 with an average rating of 8.3, while Splunk is ranked #6 with an average rating of 8.4. Nagios holds a 2.5% mindshare in NMS, compared to Splunk’s 1.2% mindshare. Additionally, 80% of Nagios users are willing to recommend the solution, compared to 95% of Splunk users who would recommend it.
Nagios Core
Read 51 Nagios Core reviews
  • 3,994 Views
  • 3,475 Comparison Views
80% willing to recommend
Splunk Observability Cloud
Read 70 Splunk Observability Cloud reviews
  • 5,846 Views
  • 1,578 Comparison Views
95% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Sep 21, 2025

Splunk Observability Cloud and Nagios Core are leading IT monitoring solutions. Splunk has a competitive edge due to its advanced features, while Nagios excels in customization and flexibility.

Features: Splunk Observability Cloud offers comprehensive data integration with efficient log searching and rapid reporting capabilities. Its robust dashboards aid in data visualization and real-time issue detection. Splunk excels in application performance monitoring and security. Meanwhile, Nagios Core is known for its customization, providing essential alerts and modular configurations. It offers distributed monitoring and supports integration with various endpoints.

Room for Improvement: Splunk Observability Cloud needs improvement in pricing structure and reducing configuration complexity. Users suggest more intuitive navigation and expanded integration options. Enhancing support for continuous monitoring could also be beneficial. Nagios Core requires improvements in its user interface and setup processes, which can be complicated. It lacks scalability compared to modern solutions and involves cumbersome configuration management.

Ease of Deployment and Customer Service: Splunk Observability Cloud supports on-premises, hybrid, and cloud environments, providing deployment flexibility. It offers strong customer support but may face criticism for the speed and complexity of resolving technical issues. Nagios Core is favored for easy deployment due to its open-source nature, though it lacks a formal support structure, relying on community and internal resources.

Pricing and ROI: Splunk Observability Cloud is perceived as costly, especially with additional features and large data management needs. However, users report high ROI from enhanced capabilities. Nagios Core is cost-effective with minimal direct expenses due to its open-source model, making it appealing to budget-conscious organizations despite fewer advanced features.

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To learn more, read our detailed Nagios Core vs. Splunk Observability Cloud Report (Updated: September 2025).
Buyer's Guide
Nagios Core vs. Splunk Observability Cloud
September 2025
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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:
 

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
Splunk Observability Cloud boosts productivity, efficiency, and ROI by simplifying problem detection and improving KPI management and collaboration.
No quotes available
For more quotes and insights, download the Nagios Core report
Using Splunk has saved my organization about 30% of our budget compared to using multiple different monitoring products.
Anyone working in front-end management should recognize the market price to see the true value of end-user monitoring.
I have definitely seen a return on investment with Splunk Observability Cloud, particularly through how fast it has grown and how comfortable other teams are in relying on its outputs for monitoring and observability.
For more quotes and insights, download the Splunk Observability Cloud report
Sathis-Kumar - PeerSpot reviewer
ES
Taiwo Ige - PeerSpot reviewer
 

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
6.9
Splunk Observability Cloud support is generally responsive but can be slow, with improvement needed, especially in the APAC region.
No quotes available
For more quotes and insights, download the Nagios Core report
On a scale of 1 to 10, the customer service and technical support deserve a 10.
They have consistently helped us resolve any issues we've encountered.
They often require multiple questions, with five or six emails to get a response.
For more quotes and insights, download the Splunk Observability Cloud report
reviewer2755917 - PeerSpot reviewer
JB
AL
 

Scalability Issues

Sentiment score
6.7
Nagios Core shows scalability for large networks but may need customizations and integrations for distributed environments.
Sentiment score
7.5
Splunk Observability Cloud is scalable and flexible but can be costly, with challenges in data ingestion and implementation.
The solution is scalable.
For more quotes and insights, download the Nagios Core report
We've used the solution across more than 250 people, including engineers.
As we are a growing company transitioning all our applications to the cloud, and with the increasing number of cloud-native applications, Splunk Observability Cloud will help us achieve digital resiliency and reduce our mean time to resolution.
I would rate its scalability a nine out of ten.
For more quotes and insights, download the Splunk Observability Cloud report
HY
AL
Lalatendu Swain - PeerSpot reviewerSathis-Kumar - PeerSpot reviewer
 

Stability Issues

Sentiment score
8.2
Nagios Core is highly stable and reliable with minimal footprint, supporting extensive monitoring without network burden.
Sentiment score
7.6
Splunk Observability Cloud is highly stable, rated 8-10/10 for reliability, with minor issues usually from user configurations.
I tried many other solutions at work, however, in terms of Nagios, I haven't seen any disruption or downtime.
For more quotes and insights, download the Nagios Core report
I would rate its stability a nine out of ten.
We rarely have problems accessing the dashboard or the page.
Unlike NetScout or regular agents for APM, RUM has many problems during the POC phase because customer environments vary widely.
For more quotes and insights, download the Splunk Observability Cloud report
HY
MM
AL
ES
 

Room For Improvement

Nagios Core needs a more intuitive interface, better scalability, and features like enhanced reporting and integration with modern tools.
Splunk Observability Cloud needs integration, automation, performance, pricing improvements, and enhanced UI, documentation, AI, and support services.
No quotes available
For more quotes and insights, download the Nagios Core report
The out-of-the-box customizable dashboards in Splunk Observability Cloud are very effective in showcasing IT performance to business leaders.
The next release of Splunk Observability Cloud should include a feature that makes it so that when looking at charts and dashboards, and also looking at one environment regardless of the product feature that you're in, APM, infrastructure, RUM, the environment that is chosen in the first location when you sign into Splunk Observability Cloud needs to stay persistent all the way through.
There is room for improvement in the alerting system, which is complicated and has less documentation available.
For more quotes and insights, download the Splunk Observability Cloud report
Taiwo Ige - PeerSpot reviewerSarah Van Zee - PeerSpot reviewer
MM
 

Setup Cost

Nagios Core is a free, cost-effective open-source tool, but requires Linux expertise and incurs hosting and maintenance costs.
Splunk Observability Cloud offers advanced features but can become costly as data volume and infrastructure needs grow.
No quotes available
For more quotes and insights, download the Nagios Core report
Splunk is a bit expensive since it charges based on the indexing rate of data.
It is expensive, especially when there are other vendors that offer something similar for much cheaper.
It appears to be expensive compared to competitors.
For more quotes and insights, download the Splunk Observability Cloud report
Sathis-Kumar - PeerSpot reviewerErnesto Gutierrez - PeerSpot reviewer
MM
 

Valuable Features

Nagios Core provides flexible, low-resource monitoring with customization, automation, efficient alerts, and integration support for reliable IT performance visibility.
Splunk Observability Cloud offers seamless data integration, real-time insights, and efficient monitoring, enhancing performance visibility across diverse environments.
You can monitor anything.
For more quotes and insights, download the Nagios Core report
Splunk provides advanced notifications of roadblocks in the application, which helps us to improve and avoid impacts during high-volume days.
For troubleshooting, we can detect problems in seconds, which is particularly helpful for digital teams.
It offers unified visibility for logs, metrics, and traces.
For more quotes and insights, download the Splunk Observability Cloud report
HY
Sathis-Kumar - PeerSpot reviewer
AL
MV
 

Categories and Ranking

Nagios Core
Ranking in Network Monitoring Software
12th
Ranking in IT Infrastructure Monitoring
11th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
51
Ranking in other categories
No ranking in other categories
Splunk Observability Cloud
Ranking in Network Monitoring Software
6th
Ranking in IT Infrastructure Monitoring
7th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
70
Ranking in other categories
Application Performance Monitoring (APM) and Observability (8th), Cloud Monitoring Software (8th), Container Management (6th), Digital Experience Monitoring (DEM) (2nd)
 

Mindshare comparison

As of October 2025, in the Network Monitoring Software category, the mindshare of Nagios Core is 2.5%, down from 3.2% compared to the previous year. The mindshare of Splunk Observability Cloud is 1.2%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Network Monitoring Software Market Share Distribution
ProductMarket Share (%)
Splunk Observability Cloud1.2%
Nagios Core2.5%
Other96.3%
Network Monitoring Software
 

Featured Reviews

Nishith-Vyas - PeerSpot reviewer
Valuable reporting and alert system with room for PDF export improvements
The NetEase reporting structure needs improvement, especially the availability report, which is weak. It should be generated automatically with minimal human intervention and should be exportable as a PDF. Besides that, an integrated PDF export feature for reports is necessary. Also, the alert mechanism and graphing mechanism need to be integrated properly into Nagios Core. Currently, integrating these requires advanced Linux knowledge. Integration of more visualization tools like Grafana and Prometheus for better graphing and visualization is also recommended.
Read full review
Taiwo Ige - PeerSpot reviewer
Alerting improves incident response across teams and enables faster awareness before customer impact
Splunk Observability Cloud could be improved in terms of integrations with more technical add-ons, such as Zoom. Although they have one with Zoom, it's not available in the cloud, so having that feature would be beneficial. Essentially, Splunk should continue expanding to create easier ways to ingest logs from different products. The out-of-the-box customizable dashboards in Splunk Observability Cloud are very effective in showcasing IT performance to business leaders. However, there are aspects that could be improved, such as linking dashboards to one another. While IT leaders may not drill down, it's crucial to create levels of dashboards for technical users to find root causes, making it effective for stakeholders.
Read full review
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Government
9%
Comms Service Provider
9%
Manufacturing Company
9%
Financial Services Firm
15%
Computer Software Company
12%
Retailer
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise11
Large Enterprise22
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise10
Large Enterprise43
 

Questions from the Community

What do you like most about Nagios Core?
What I like about Nagios Core is that it helps me ensure everything is running smoothly by checking the status of hosts and services.
See all answers
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 do you like most about SignalFx?
The most valuable feature is dashboard creation.
See all answers
What needs improvement with SignalFx?
Regarding dashboard customization, while Splunk has many dashboard building options, customers sometimes need to create specific dashboards, particularly for applicative metrics such as Java and pr...
See all answers
What is your primary use case for SignalFx?
The solution involves observability in general, such as Application Performance Monitoring, and generally addresses digital applications, web applications, sites, and mobile applications. I worked ...
See all answers
 

Comparisons

Icinga vs Nagios Core Logo
Icinga vs Nagios Core
Compared 21% of the time
Nagios XI vs Nagios Core Logo
Nagios XI vs Nagios Core
Compared 14% of the time
Zabbix vs Nagios Core Logo
Zabbix vs Nagios Core
Compared 12% of the time
Centreon vs Nagios Core Logo
Centreon vs Nagios Core
Compared 7% of the time
Checkmk vs Nagios Core Logo
Checkmk vs Nagios Core
Compared 6% of the time
More Nagios Core Competitors
Sentry vs Splunk Observability Cloud Logo
Sentry vs Splunk Observability Cloud
Compared 7% of the time
Observe vs Splunk Observability Cloud Logo
Observe vs Splunk Observability Cloud
Compared 6% of the time
SigNoz vs Splunk Observability Cloud Logo
SigNoz vs Splunk Observability Cloud
Compared 5% of the time
Cribl vs Splunk Observability Cloud Logo
Cribl vs Splunk Observability Cloud
Compared 5% of the time
Honeycomb Enterprise vs Splunk Observability Cloud Logo
Honeycomb Enterprise vs Splunk Observability Cloud
Compared 4% of the time
More Splunk Observability Cloud Competitors
 

Product Reports

Buyer's Guide
Nagios Core
September 2025
Nagios Core reportDownload Nagios Core product report
Buyer's Guide
Splunk Observability Cloud
September 2025
Splunk Observability Cloud reportDownload Splunk Observability Cloud product report
 

Also Known As

No data available
Splunk Infrastructure Monitoring, Splunk Real User Monitoring (RUM), Splunk Synthetic Monitoring
 

Overview

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

Nagios

Splunk Observability Cloud offers sophisticated log searching, data integration, and customizable dashboards. With rapid deployment and ease of use, this cloud service enhances monitoring capabilities across IT infrastructures for comprehensive end-to-end visibility.

Focused on enhancing performance management and security, Splunk Observability Cloud supports environments through its data visualization and analysis tools. Users appreciate its robust application performance monitoring and troubleshooting insights. However, improvements in integrations, interface customization, scalability, and automation are needed. Users find value in its capabilities for infrastructure and network monitoring, as well as log analytics, albeit cost considerations and better documentation are desired. Enhancements in real-time monitoring and network protection are also noted as areas for development.

What are the key features?
  • Log Searching: Efficiently search and analyze logs from various sources.
  • Data Integration: Seamlessly integrate with multiple environments.
  • Dashboard Customization: Tailor dashboards to specific monitoring needs.
  • Monitoring Capabilities: Provides comprehensive insights into application performance.
  • Security Features: Analyze and address security threats across systems.
  • Visualization Tools: Enhance data analysis and system performance optimization.
Why consider this for ROI?
  • Comprehensive Visibility: Gain complete insights into IT infrastructure.
  • Performance Optimization: Improve overall system performance and efficiency.
  • Rapid Deployment: Quick setup to meet organization demands swiftly.
  • Enhanced Security: Strengthen security measures through detailed analytics.

In industries, Splunk Observability Cloud is implemented for security management by analyzing logs from detection systems, offering real-time alerts and troubleshooting for cloud-native applications. It is leveraged for machine data analysis, improving infrastructure visibility and supporting network and application performance management efforts.

Splunk
 

Sample Customers

Airbnb, Cisco, PayPal, FanDuel
Sunrun, Yelp, Onshape, Tapjoy, Symphony Commerce, Chairish, Clever, Grovo, Bazaar Voice, Zenefits, Avalara
Buyer's Guide
Nagios Core vs. Splunk Observability Cloud
September 2025
Free Report: Nagios Core vs. Splunk Observability Cloud
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