Netdata
Application monitoring and observability platform
Netdata is a free, open-source, distributed, real-time, performance monitoring and troubleshooting tool for systems and applications. It provides monitoring of metrics, such as CPU usage, memory usage, network traffic, disk I/O activity, and more, with high granularity and minimal overhead. Netdata is designed to be lightweight and efficient, and it can be easily installed on Linux systems. Once installed, it runs as a daemon and starts collecting performance data from the system and its applications immediately. It has a built-in web interface that provides real-time, interactive visualizations of the collected data, allowing users to quickly identify and troubleshoot performance issues. Netdata is highly customizable and extensible. It supports a variety of plugins and can be easily integrated with other tools, such as Grafana and Prometheus. It also has an active community of developers and users who contribute to its development and provide support.