Google Lighthouse
Lighthouse is an open-source, automated tool for improving the quality of web pages.
15 Alternatives To Google Lighthouse
DRKSpiderJava
DRKSpider is an open source website crawler (sitemap generator) and link checker. Features:
DareBoost
DareBoost is an online tool to test, analyze and monitor your website: speed, SEO, quality, security. All you need for website optimization in a single service.
Fiddler
Fiddler is a debugging program for websites.
GTmetrix
GTmetrix is a free tool that analyzes your page’s speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
HTTPNetworkSniffer
packet sniffer tool that captures all HTTP requests/responses sent between the Web browser and the Web server and displays them in a simple table
Live HTTP Headers
The goal of this project is to adds information about the HTTP headers in three ways:
Meta Forensics
Meta Forensics is a website architecture, internal link and SEO analysis tool that helps identify…
Pingdom
With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Postman Collections
Biggest library of ready-made API collections for Postman
Site Relic
Find out how much time take to load your site from multiple location across devices.
WebPagetest
Run a free website speed test from multiple locations around the globe using real browsers…
Website Speed Test by Pingdom
Pingdom is a website performance monitoring software.
Yellow Lab Tools
Website test that checks performance and HTML, CSS and JavaScript quality.
neXpert
neXpert is an add-on to Fiddler Web Debugger which aids in performance testing web applications.