The best open source alternative to WebPageTest is Web Check. If that doesn't suit you, our users have ranked more than 25 alternatives to WebPageTest and seven of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to WebPageTest are Google Lighthouse, PageSpeed Insights, HTTP Observatory and Yellow Lab Tools.
Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.
Web Check is the most popular Web-based & Self-Hosted alternative to WebPageTest.
Web Check is the most popular Open Source & free alternative to WebPageTest.
Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.
PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow is a Firefox add-on integrated with the Firebug web development tool.
Gain invaluable insights into your internet infrastructure by monitoring, debugging, and benchmarking it with our globally distributed network of probes.
Globalping is the most popular Windows, Mac & Linux alternative to WebPageTest.
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