Automated auditing, performance metrics, and best practices for the web.
Sitespeed.io is an open source tool that helps you monitor, analyze and optimize your website speed and performance, based on performance best practices advices from the coach and collecting browser metrics using the Navigation Timing API, User Timings and Visual Metrics (FirstVisualChange, SpeedIndex & LastVisualChange).
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.
Collect performance metrics for your library/application.
.NET library to instrument your code with Prometheus metrics
Application Layer DoS attack simulator
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.
APM Server
Node Application Metrics provides a foundational infrastructure for collecting resource and performance monitoring data for Node.js-based applications.
Performance Metrics for Web Browsers
DEPRECATED StackImpact Python Profiler - Production-Grade Performance Profiler: CPU, memory allocations, blocking calls, exceptions, metrics, and more
Elastic APM Node.js Agent
inspectIT is the leading Open Source APM (Application Performance Management) tool for analyzing your Java (EE) applications.
This is the development repository for sparkMeasure, a tool for performance troubleshooting of Apache Spark workloads. It simplifies the collection and analysis of Spark task and stage metrics data.
Qubole Sparklens tool for performance tuning Apache Spark
Golang application performance data monitoring.
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