Nagios

Nagios Core is a powerful open-source monitoring tool for IT infrastructures. It helps businesses track servers, networks, and applications efficiently.

Key Features

• Real-time monitoring of IT systems
• Customizable alerts and notifications
• Extensible through plugins
• Web-based interface for easy access
• Cross-platform compatibility
• Community-driven support and resources

Pros

• Completely free and open source
• Strong community support and documentation
• Highly customizable with plugins
• Scalable for various IT environments
• Proven reliability over decades

Cons

• Steeper learning curve for beginners
• Limited out-of-the-box features
• User interface may feel outdated
• Requires manual setup and configuration
• Advanced features may need additional plugins