OpenNMS

OpenNMS (Open Network Management System) is an open-source, enterprise-grade network management platform. It is designed for fault management, performance management, and service level management.

OpenNMS is written in Java and released under the GNU General Public License. It provides a comprehensive suite of tools for discovering, monitoring, and managing network devices and applications. The platform can be deployed in a variety of environments, ranging from small businesses to large enterprises.

Key features of OpenNMS include:

• Device Discovery: Automatic discovery of network devices and services.
• Fault Management: Detection and notification of network outages and errors.
• Performance Monitoring: Collection and analysis of network performance metrics.
• Service Level Management: Monitoring and reporting on service level agreements (SLAs).
• Thresholding: Defining thresholds for performance metrics and generating alerts when thresholds are exceeded.
• Reporting: Generation of reports on network performance and availability.
• Provisioning: Automated configuration of network devices (limited functionality).
• Event Management: Correlation and filtering of events to reduce noise and identify root causes.
• Notifications: Customizable notification options for alerts and events.
• Integration: Integration with other network management tools and platforms through APIs.

OpenNMS is extensible and can be customized to meet specific network management requirements. It has a modular architecture, allowing users to add new features and functionality through plugins. The platform also supports a variety of protocols, including SNMP, JMX, and Telnet/SSH.

The OpenNMS project has a large and active community of users and developers. The community provides support, documentation, and training resources.