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.

Performance monitoring tools for Linux

Intel® Performance Counter Monitor (Intel® PCM)

Web performance library for measuring all performance vitals metrics

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.

nannyml: post-deployment data science in python

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

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

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

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

Complete Mobile App Monitoring platform with Crash Reporting, ANR Tracking, Bug Reporting, Performance Tracing, Logging and more! 100% open source alternative to Firebase Crashlytics.

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

Sample microservices application for playing with

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