--- description: Learn more about Nagios Core price, benefits, and disadvantages for businesses in Ireland. Read verified software reviews and discover tools that fit your business needs. image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress title: Nagios Core Pricing, Cost & Reviews - Capterra Ireland 2026 --- Breadcrumb: [Home](/) > [Website Monitoring Software](/directory/10021/website-monitoring/software) > [Nagios Core](/software/152751/nagios-core) # Nagios Core Canonical: https://www.capterra.ie/software/152751/nagios-core Page: 1 / 3\ Next: [Next page](https://www.capterra.ie/software/152751/nagios-core?page=2) > Open-source IT monitoring engine for servers, networks, and applications with flexible alerting and extensible plugins. > > Verdict: Rated **4.1/5** by 34 users. Top-rated for **Likelihood to recommend**. ----- ## Overview ### Who Uses Nagios Core? Nagios Administrators, Network Administrators, System Administrators, IT Operations Managers, Managed Service Providers, Network Engineers, DevOps Engineers ## Quick Stats & Ratings | Metric | Rating | Detail | | **Overall** | **4.1/5** | 34 Reviews | | Ease of Use | 3.5/5 | Based on overall reviews | | Customer Support | 3.4/5 | Based on overall reviews | | Value for Money | 4.5/5 | Based on overall reviews | | Features | 4.1/5 | Based on overall reviews | | Recommendation percentage | 80% | (8/10 Likelihood to recommend) | ## About the vendor - **Company**: Nagios Enterprises - **Founded**: 2007 ## Commercial Context - **Starting Price**: US$0.00 - **Pricing model**: Flat Rate (Free version available) (Free Trial) - **Target Audience**: Self Employed, 2–10, 11–50, 51–200, 201–500, 501–1,000, 1,001–5,000, 5,001–10,000, 10,000+ - **Deployment & Platforms**: Cloud, SaaS, Web-based, Windows (On-Premise), Linux (On-Premise) - **Supported Languages**: English - **Available Countries**: Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antigua & Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, Bahamas, Bahrain, Bangladesh, Barbados, Belarus, Belgium and 209 more ## Features - Alerts/Notifications - Data Visualisation ## Support Options - FAQs/Forum - Knowledge Base - Chat ## Category - [Website Monitoring Software](https://www.capterra.ie/directory/10021/website-monitoring/software) ## Alternatives 1. 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At this point it could be useful to evaluate other commercial products as it appears that it could be really expensive. The alternative is to use it without the commercial support but maybe some integrations cannot be done and also if you are a company maybe you could be in the need of support and then you have to buy commercial support. ----- ### "Nagios can save your money" — 3.0/5 > **Thomas** | *18 December 2019* | Computer Games | Recommendation rating: 6.0/10 > > **Pros**: \*It is free of charge \*It is open-source \*So many monitoring plugins and addons are available \*Big community \*There are many how-to articles > > **Cons**: \*There is no auto-discovery function, every host and service must be added manually. \*Nagios web frontend is not user-friendly and you propably will use something like Thruk addon which provide better Web UI. \*Hard to configure > > We are using Nagios Core for several years and it helps us to detect problems in our infrastructure sooner than our customers. We are using Nagios Core which is free, but if you want more features, you should buy Nagios XI version. ----- ### "Reliable and comprehensive monitoring for startups and beyond" — 5.0/5 > **Samuel** | *8 July 2022* | Telecommunications | Recommendation rating: 10.0/10 > > **Pros**: Nagios is the way to go to actively monitor essentially every single aspect of your tech infrastructure. It is known that having a great response time in case of outages and proactively monitor services before a breakdown occurs is critical to keep customers happy. Nagios Core does exactly that and way more. However, be warned, integration is terribly hard if you want to do advanced configuration. There is a lot of sysadmin/networking/software knowledge that needs to be covered before you get this very special type of monitoring so you may find yourself with small snags that don't let your dream monitoring service come alive but at the end, it is totally doable with Nagios Core. > > **Cons**: Documentation could be better organized and a few additional GUIs for quick configuration would be a desirable thing. The main interface is very very lean, probably old-style with html4-like visuals and controls but it is effective and light. We basically had an issue with implementing custom plugins to monitor essential aspects of our business, Python scripting was needed but getting this to work effectively on Nagios was another issue. Again, it has a steep learning curve but with time, you can master it. > > With Nagios Core we are solving the necessity to keep every single aspect of business critical services we need to guarantee an SLA for. Having notifications and alerts for everything that is happening in your network is a great benefit to keep an edge over competitors. We are very pleased with this free software that delivers despite the difficult implementation. ----- ### "Robust and fully functional with a huge learning curve. To use this you need to invest a lot of time" — 5.0/5 > **William** | *26 June 2018* | Recommendation rating: 10.0/10 > > **Pros**: Nagios Core can do literally anything you need it to thanks to the amazing developer community and their ability to program custom addons. Need to monitor servers all over the world? No problem. Need to schedule outages and downtime? No problem. Need to monitor a custom system that only a handful of people use? There is most likely a module for that as well. > > **Cons**: To make it all work, you need to have advanced knowledge of linux command line administration and the ability to modify configuration files from the command line. Also, a few years of practice won't hurt to learn how to fully utilize Nagios Core. > > Monitoring of servers and individual services with easy to use notifications and alerts. ----- ### "The standard for open source monitoring and alerting that scales with the growth of your environment" — 3.0/5 > **Gabe** | *26 February 2018* | Information Technology & Services | Recommendation rating: 8.0/10 > > **Pros**: -High adoption: Many IT shops are familiar with Nagios Core, lots of discussion and documentation available for the product. If there are questions we have, we can rely on the skillsets of our administrators, and fall-back to online documentation/community support. -Multi-platform endpoint support: Monitoring Windows/Linux servers/workstations is possible, and is leverage in our environment for hundreds of endpoints. -Adding nodes to monitor is simple: Nagios core functionality resides in just a few configuration files. One for monitored endpoints, one for the each of those endpoints' services, and group policies for different profiles of alerting/escalation settings -On-call escalations: We use Nagios Core to notify on-call staff of outages for services for multip teams, via email and SMS messages. Nagios is the foundation of on-call system. -Integrates well with revision control support: configurations are managed within config files, and can be easily managed and control with popular code revision software. > > **Cons**: -Config file housekeeping: If there are multiple people contributing and managing config files for Nagios, there is a high potential for confusion and messiness within the config files. Training or clear policies regarding organization and contributions to theconfig files is HIGHLY recommended to maintain sanity. Clearly documented practices regarding notification groups for montored endpoints is also HIGHLY recommended to decrease the chances of confusing alerting behaviors for critical systems. Committing files to a revision control software is highly recommended and a watchful eye on the consistency of contributions is key. -Not a slick feature-rich experience out of the box: What you put into it is what you get out of it. Like many open source solutions, commitment and resources from the stakeholders managing this solution will be required in order to get the most from it. ----- Page: 1 / 3\ Next: [Next page](https://www.capterra.ie/software/152751/nagios-core?page=2) ## Links - [View on Capterra](https://www.capterra.ie/software/152751/nagios-core) ## This page is available in the following languages | Locale | URL | | de | | | de-AT | | | de-CH | | | en | | | en-AE | | | en-AU | | | en-CA | | | en-GB | | | en-IE | | | en-IL | | | en-IN | | | en-NZ | | | en-SG | | | en-ZA | | | es | | | es-AR | | | es-CL | | | es-CO | | | es-CR | | | es-DO | | | es-EC | | | es-MX | | | es-PA | | | es-PE | | | fr | | | fr-BE | | | fr-CA | | | fr-LU | | | it | | | nl | | | nl-BE | | | pt | | | pt-PT | | ----- ## Structured Data