JSPM

Web performance library for measuring all User-centric performance metrics, including the latest Web Vitals.

Send browser performance metrics to third-party analytics providers

Like `performance.now()` but in nanoseconds.

Easily keep track of metrics for many nested test suites

Command-line-interface for the perfrunner - automated UI performance test tool

Find the process's time resolution

Automated UI performance test tool to measure performance changes for the web apps and sites

perst is a wrapper around LoaderIO, which can be configured and run in your commandline multiple tests and validates the measureable values like AVG Response Time and AVG Error Rate.

前端性能监控,采集以及上报。用于测量第一个dom生成的时间(FP/FCP/LCP)、用户最早可操作时间（fid|tti）和组件的生命周期性能,，网络状况以及资源大小等等。向监控后台报告实际用户测量值。

Powerful Express.js utility package for better work with Express. Zero dependencies.

JavaScript library that measures First (Contentful) Paint (FP/FCP) and First Input Delay (FID). Annotates components’ performance for Vanilla and Angular applications, into the DevTools timeline. Reports all the results to Google Analytics or your favorit

Monitor performance and overhead with real-time system metrics watchdog (cpu,ram,rss,swap).

A lightweight, zero-configuration performance profiler for Node.js applications with real-time dashboard

Simple but powerful profiling mechanism to find bottlenecks in your code.

A JavaScript library for measuring FCP, LCP. Report real user measurements to tracking tool.

Web performance library for measuring all User-centric performance metrics, including the latest Web Vitals.

this package will connect you to the nextlevel dashboard

Tool to run light house cron jobs on multiple urls and ship results

A Webpack plugin to perfume.js

web performance analysis monitoring tools