Prometheus
Prometheus is an open-source monitoring and alerting toolkit originally developed at SoundCloud in 2012. It collects and stores metrics as time-series data, allowing detailed analysis of system performance, service health, and application behavior. Prometheus integrates seamlessly with containerized environments like Kubernetes and orchestration tools such as Docker.
DTrace
DTrace is a comprehensive dynamic tracing framework primarily used for performance analysis and troubleshooting in software applications and systems. Originally developed by Sun Microsystems for the Solaris operating system in 2003, DTrace provides developers and system administrators with powerful tools to observe and analyze the behavior of software in real-time.