---
description: Compare Nagios Core vs Oh Dear. Learn more about each of the software’s price, features, and helpful software reviews for South African business users.
image: https://gdm-localsites-assets-gfprod.imgix.net/images/capterra/og_logo-e5a8c001ed0bd1bb922639230fcea71a.png?auto=format%2Cenhance%2Ccompress
title: Compare Nagios Core vs Oh Dear - Capterra South Africa 2026
---

Breadcrumb: [Home](/) > [Website Monitoring Software](/directory/10021/website-monitoring/software) > [Nagios Core \<span\>vs\</span\> Oh Dear](https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear)

# Compare Nagios Core vs Oh Dear

Canonical: https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear

> Detailed comparison between Nagios Core and Oh Dear. Check ratings, reviews, pricing, and features to make the best decision for your business.

-----

## At a Glance

| Metric | Nagios Core | Oh Dear |
| **Overall rating** | 4.1/5 | 4.9/5 |
| **Total Reviews** | 34 | 72 |
| **Starting Price** | US$0,00 | €15,00 |
| **Free Trial** | Yes | Yes |
| **Free Version** | Yes | No |
| **Deployment** | Cloud, SaaS, Web-based, Windows (On-Premise), Linux (On-Premise) | Cloud, SaaS, Web-based |
| **Support** | FAQs/Forum, Knowledge Base, Chat | Email/Help Desk, FAQs/Forum, Knowledge Base, Chat |
| **Training** | Webinars, Documentation, Videos | In Person, Documentation, Videos |

## Best for

### Nagios Core

Nagios Administrators, Network Administrators, System Administrators, IT Operations Managers, Managed Service Providers, Network Engineers, DevOps Engineers

### Oh Dear

Web developers, website owners, and marketing teams.

## Key features

### Nagios Core

- API
- Alerts/Notifications
- Data Visualization
- FTP Monitoring
- Server Monitoring
- User Management

### Oh Dear

- API
- Activity Tracking
- Alerts/Notifications
- Application Management
- Customizable Reports
- Dashboard
- Data Visualization
- Event Logs
- FTP Monitoring
- For MSPs
- For Websites
- Mobile Alerts
- Monitoring
- Multi-Location Monitoring
- Performance Management
- Real-Time Data
- SSL Monitoring
- Scheduled Testing
- Server Monitoring
- User Management

## Links

- [View Nagios Core Profile](https://www.capterra.co.za/software/152751/nagios-core)
- [View Oh Dear Profile](https://www.capterra.co.za/software/190028/oh-dear)
- [View Original Comparison](https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear)

-----

## Structured Data

<script type="application/ld+json">
  {"@context":"https://schema.org","@graph":[{"name":"Compare Nagios Core vs Oh Dear - Capterra South Africa 2026","description":"Compare Nagios Core vs Oh Dear. Learn more about each of the software’s price, features, and helpful software reviews for South African business users.","url":"https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear","about":[{"@id":"https://www.capterra.co.za/software/152751/nagios-core#software"},{"@id":"https://www.capterra.co.za/software/190028/oh-dear#software"}],"breadcrumb":{"@id":"https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear#breadcrumblist"},"@id":"https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear#webpage","@type":["WebPage","CollectionPage"],"isPartOf":{"@id":"https://www.capterra.co.za/#website"},"inLanguage":"en-ZA","publisher":{"@id":"https://www.capterra.co.za/#organization"}},{"name":"Nagios Core","description":"Nagios Core is a free, open-source IT infrastructure monitoring solution that gives IT teams real-time visibility into servers, network devices, applications, services, and custom metrics. It continuously checks system status and performance, notifying administrators when issues occur and resolve so teams can respond quickly and maintain uptime.\n\nBuilt on a powerful, extensible engine, Nagios Core supports thousands of community-developed plugins and integrations that enable monitoring of virtually any host, service, or device. Its flexible alerting system includes email, SMS, and custom notification methods, while its plugin architecture allows teams to tailor checks and metrics for unique environments.\n\nNagios Core runs on Linux and UNIX system and is ideal for organizations that want full control over their monitoring infratructure, zero licensing costs, and the ability to configure and extend monitoring through an active open-source community.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/86d129e0-21c0-426e-b52c-8fbfb39237fa.png","url":"https://www.capterra.co.za/software/152751/nagios-core","@id":"https://www.capterra.co.za/software/152751/nagios-core#software","@type":"SoftwareApplication","publisher":{"@id":"https://www.capterra.co.za/#organization"},"applicationCategory":"BusinessApplication","aggregateRating":{"@type":"AggregateRating","ratingValue":4.1,"bestRating":5,"ratingCount":34},"offers":{"price":"0","@type":"Offer","priceCurrency":"USD"},"operatingSystem":"Cloud, Windows on premise, Linux on premise"},{"name":"Oh Dear","description":"Oh Dear is a website monitoring software that provides comprehensive oversight of websites. It continuously checks website uptime, SSL certificates, broken links, scheduled tasks, and other critical metrics. Oh Dear notifies users when it detects issues. The software also creates status pages to inform customers during incidents. The aim is to fully monitor websites beyond just homepage uptime.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/40aa86f0-f619-46b6-81bc-048397125ab1.png","url":"https://www.capterra.co.za/software/190028/oh-dear","@id":"https://www.capterra.co.za/software/190028/oh-dear#software","@type":"SoftwareApplication","publisher":{"@id":"https://www.capterra.co.za/#organization"},"applicationCategory":"BusinessApplication","aggregateRating":{"@type":"AggregateRating","ratingValue":4.9,"bestRating":5,"ratingCount":72},"offers":{"price":"15","@type":"Offer","priceCurrency":"EUR"},"operatingSystem":"Cloud"},{"@id":"https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear#breadcrumblist","@type":"BreadcrumbList","itemListElement":[{"name":"Home","position":1,"item":"/","@type":"ListItem"},{"name":"Website Monitoring Software","position":2,"item":"/directory/10021/website-monitoring/software","@type":"ListItem"},{"name":"Nagios Core vs Oh Dear","position":3,"item":"https://www.capterra.co.za/compare/152751/190028/nagios-core/vs/oh-dear","@type":"ListItem"}]}]}
</script>
