Fiddler is a Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP(S) traffic, set breakpoints, and "fiddle" with incoming or outgoing data.
- - Fiddler is the most popular Windows alternative to PageSpeedAlarm.com.
- - Fiddler is the most popular free alternative to PageSpeedAlarm.com.
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.
- - Google Lighthouse is the most popular Web-based alternative to PageSpeedAlarm.com.
- - Google Lighthouse is the most popular Open Source alternative to PageSpeedAlarm.com.
GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
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.
Use this free Website Speed Test to analyze the load speed of your websites, and learn how to make them faster.
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.
CuteStat.com is a web service for Website Owners, Webmasters and General Internet Users to retrieve information related with Domain Name, IP Address, Web Server and Search Engine Optimization (SEO).
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.Discontinued
The GitHub repository hasn't been updated since mid-2014.
Domsignal is an all-in-one platform dedicated to empowering developers, SEO experts, sysadmins, and security researchers in their quest for website excellence. We provide a comprehensive suite of tools to help you analyze and optimize your website's performance, security...