Automated auditing, performance metrics, and best practices for the web.

🎮 The only Front-End Performance Checklist that runs faster than the others

sitespeed.io is an open-source tool for comprehensive web performance analysis, enabling you to test, monitor, and optimize your website’s speed using real browsers in various environments.

High performance Java APM. Powered by ASM. Try it. Test it. If you feel its better, use it.

Intel® Performance Counter Monitor (Intel® PCM)

Scouter is an open source APM (Application Performance Management) tool.

.NET library to instrument your code with Prometheus metrics

Collect performance metrics for your library/application.

Application Layer DoS attack simulator

⚡️ 💾 Web Performance Snippets

Performance-Bookmarklet helps to analyze the current page through the Resource Timing API, Navigation Timing API and User-Timing - requests by type, domain, load times, marks and more. Sort of a light live WebPageTest.

🌌 The R easystats-project

Node Application Metrics provides a foundational infrastructure for collecting resource and performance monitoring data for Node.js-based applications.

Performance Metrics for Web Browsers

This repository contains the development code for sparkMeasure, an Apache Spark performance analysis and troubleshooting library. It simplifies collecting, aggregating, and exporting Spark task/stage metrics, and is designed for practical use by developers and data engineers in interactive analysis, testing, and production monitoring workflows.

🎮 더 빠르게 작동하는 프론트엔드 성능 체크리스트

DEPRECATED StackImpact Python Profiler - Production-Grade Performance Profiler: CPU, memory allocations, blocking calls, exceptions, metrics, and more

Qubole Sparklens tool for performance tuning Apache Spark