Statsviz
Visualize Go runtime metrics in real time
...The system streams metrics to the browser via WebSocket, enabling near-real-time updates with minimal overhead. statsviz is designed to integrate easily into existing Go services and supports customization such as alternate routes, middleware integration, and user-defined plots. Its visual interface includes filtering controls, time-range selection, and the ability to pause updates for closer inspection. Overall, statsviz is a powerful diagnostic tool for Go developers who need deep runtime observability during performance tuning and debugging.