pprof
pprof is a tool for visualization and analysis of profiling data
...It is widely used in Go but also has bindings and exporters for other ecosystems, and the repository includes a Go package for reading and writing profiles programmatically. The pprof command can operate on local files or fetch from targets exposing profiling endpoints, supporting iterative, production-oriented workflows. Its design and proto schema make it a lingua franca for profilers that want to interoperate across languages and runtimes.