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Nagios
Established open-source monitoring and alerting system for infrastructure
Nagios is a pioneering open-source monitoring platform with a long history of reliable infrastructure monitoring. It monitors hosts, services and network devices through plugins and provides alerting, dashboarding and status reporting capabilities.
| Pricing from | Free |
| Best for | Legacy enterprise deployments and organisations standardised on traditional infrastructure monitoring approaches |
| Website | www.nagios.com |
Strengths and trade-offs
- Extremely stable and battle-tested with decades of deployment history
- Vast ecosystem of plugins and community-developed extensions
- Modern interface and architecture lag significantly behind contemporary platforms
- Plugin-based approach requires substantial custom development and integration work
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