---
description: Compare Alerta vs Nagios Core. 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 Alerta vs Nagios Core - Capterra South Africa 2026
---

Breadcrumb: [Home](/) > [Website Monitoring Software](/directory/10021/website-monitoring/software) > [Alerta \<span\>vs\</span\> Nagios Core](https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core)

# Compare Alerta vs Nagios Core

Canonical: https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core

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

-----

## At a Glance

| Metric | Alerta | Nagios Core |
| **Overall rating** | 4.0/5 | 4.1/5 |
| **Total Reviews** | 2 | 34 |
| **Starting Price** | US$10,00 | US$0,00 |
| **Free Trial** | Yes | Yes |
| **Free Version** | No | Yes |
| **Deployment** | Cloud, SaaS, Web-based | Cloud, SaaS, Web-based, Windows (On-Premise), Linux (On-Premise) |
| **Support** | Chat | FAQs/Forum, Knowledge Base, Chat |
| **Training** | Documentation | Webinars, Documentation, Videos |

## Best for

### Alerta

website owners, web developers, IT professionals, and digital marketers.

### Nagios Core

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

## Key features

### Alerta

- Real-Time Monitoring
- Uptime Reporting

### Nagios Core

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

## Links

- [View Alerta Profile](https://www.capterra.co.za/software/80476/website-monitoring)
- [View Nagios Core Profile](https://www.capterra.co.za/software/152751/nagios-core)
- [View Original Comparison](https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core)

-----

## Structured Data

<script type="application/ld+json">
  {"@context":"https://schema.org","@graph":[{"name":"Compare Alerta vs Nagios Core - Capterra South Africa 2026","description":"Compare Alerta vs Nagios Core. 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/80476/152751/website-monitoring/vs/nagios-core","about":[{"@id":"https://www.capterra.co.za/software/80476/website-monitoring#software"},{"@id":"https://www.capterra.co.za/software/152751/nagios-core#software"}],"breadcrumb":{"@id":"https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core#breadcrumblist"},"@id":"https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core#webpage","@type":["WebPage","CollectionPage"],"publisher":{"@id":"https://www.capterra.co.za/#organization"},"isPartOf":{"@id":"https://www.capterra.co.za/#website"},"inLanguage":"en-ZA"},{"name":"Alerta","description":"Alertra is a website monitoring service that checks websites, servers, and routers continuously to detect outages and slowdowns. The service monitors website uptime by performing tests from locations around the world, and it sends alerts via phone and SMS when issues are detected so companies can address problems quickly. Alertra provides 24/7 monitoring with its technology and offers a free trial so users can evaluate the software.","image":"https://gdm-catalog-fmapi-prod.imgix.net/ProductScreenshot/8655399b-7b8f-4303-b076-3cbc8548b64a.jpeg","url":"https://www.capterra.co.za/software/80476/website-monitoring","@id":"https://www.capterra.co.za/software/80476/website-monitoring#software","@type":"SoftwareApplication","applicationCategory":"BusinessApplication","publisher":{"@id":"https://www.capterra.co.za/#organization"},"aggregateRating":{"@type":"AggregateRating","bestRating":5,"ratingCount":2,"ratingValue":4.0},"offers":{"price":"10","@type":"Offer","priceCurrency":"USD"},"operatingSystem":"Cloud"},{"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","applicationCategory":"BusinessApplication","publisher":{"@id":"https://www.capterra.co.za/#organization"},"aggregateRating":{"@type":"AggregateRating","bestRating":5,"ratingCount":34,"ratingValue":4.1},"offers":{"price":"0","@type":"Offer","priceCurrency":"USD"},"operatingSystem":"Cloud, Windows on premise, Linux on premise"},{"@id":"https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core#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":"Alerta vs Nagios Core","position":3,"item":"https://www.capterra.co.za/compare/80476/152751/website-monitoring/vs/nagios-core","@type":"ListItem"}]}]}
</script>
