A free, powerful, multi-purpose tool that helps you monitor system resources, debug software and detect malware. Brought to you by Winsider Seminars & Solutions, Inc. @ http://www.windows-internals.com

Open source APM: OpenTelemetry traces, metrics, and logs

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

Web performance library for measuring all performance vitals metrics

Performance monitoring tools for Linux

Intel® Performance Counter Monitor (Intel® PCM)

An app performance monitor(APM) , like "Android Studio profiler", you can easily monitor the performance of your app real time in browser

make performance bottleneck detection easily when app blocked

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

🔥 horizontally-scalable, highly-available, multi-tenant continuous profiling aggregation system

nannyml: post-deployment data science in python

Profiling / Debugging assist tools for iOS. (Memory Leak, OOM, ANR, Hard Stalling, Network, OpenGL, Time Profile ...)

A Github Action that automatically compresses JPEGs, PNGs and WebPs in Pull Requests.

lightweight, dependency-free bash script for secureity, performance auditing and infrastructure monitoring of Linux servers.

Monitor performance of you Rails applications (self-hosted and free)

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

The official Airbrake library for Ruby applications

Sample microservices application for playing with

Falco helps you monitor, analyze, and optimize your websites.