The best Performance Testing tools and resources on the internet.

Track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations

Injects a fake HTTP request/response into a node HTTP server

Visualizing Real-World User Experience Data with Chrome User Experience Report

benchmark tooling that loves you ❤️

TCP proxy with variable latency

Fetch and process the JSON data from a WebPageTest result.

open-source load testing tool, using Go and JavaScript

Converts all the Postman requests, including tests, variables, ... to K6 scripts

Performance comparison of Javascript rendering/game engines.

Get performance and usage implications of custom fonts.

An Android analytics library created using Kotlin.

A HTTP benchmarking tool based mostly on wrk

HTTP load tester and benchmarking utility

Apache HTTP server benchmarking tool.

A flaky network simulator for your mobile app

Simulate common network problems like latency, bandwidth restrictions and more

A curated list of snippets to get Web Performance metrics.

Scan your entire site with Google Lighthouse in 2 minutes (on average).

Measure the performance of any Android app 🔦

Web performance report every week in your inbox.

Easy web performance trace sharing

Challenge your apps on iOS with monkey testing 📱🐒

A high-performance load testing tool, written in Go.

Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.

A GitHub Action that lets you automatically run tests against WebPageTest on code changes.

A web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.

Load test any system with a distributed cluster

open source software for better troubleshooting common problems that occurred in Java applications.

Help companies solve the high availability problems in the process of migrating to cloud-native systems through chaos engineering️

Avoid costly downtime. Minimize your risk of system failure by proactively testing for weaknesses before they become outages.

⏰ 🔥 A TCP proxy to simulate network and system conditions for chaos and resiliency testing

Simple JMeter performance tests API

This tool runs a Lighthouse performance test at a range of different network speeds.

A high-performance HTTP benchmarking tool with real-time web UI and terminal displaying

🌐 Load test with real browsers! Powered by Artillery + Playwright

An online tool to enter a URL to see how well the images are optimized and what you can do to improve them.

JS performance

Identify NPM libraries included in Javascript files

A diagnostic CSS snippet that exposes potential performance issues in your page’s `head` element.

A Linux system resource monitor with support for Mac in development.

HTTP load testing tool and library. It's over 9000!

Multi location based load testing

Cloud Native Chaos Engineering platform

A Chrome extension that automatically checks Web Vitals scores on the website you're currently viewing.

Dashboard/Report analyzer for load testing with JMeter

Performance and Infra testing

Scanning tool that audits SEO, performance and other web best practices

Open source load testing tool

Performance Testing Tool

Performance Testing

An open source load testing tool.