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.
13 Alternatives To GTmetrix
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.
Google Lighthouse
Lighthouse is an open-source, automated tool for improving the quality of web pages.
LogicMonitor
LogicMonitor is the SaaS performance monitoring platform for the world’s best IT teams. Deploy Fast, Monitor More, Improve Ops.
MaxCDN Tools
Performance testing tool.
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.
SEO PowerSuite
Get all SEO tools in one pack - download free edition of SEO PowerSuite and get top 10 rankings for your site on Google and other search engines!
Site24x7
Site24x7 offers both free & paid website monitoring services. Monitor websites remotely and receive instant email/sms alerts if your website becomes unavailable. View uptime & performance graphs of your website monitors.
StatusCake
StatusCake | Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
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.
calibre
Ebook manager, viewer & converter