Fiddler 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... Free Windows One click installation Add a feature 160 Like fiddler intercepts traffic and allows you to debug, lighthouse does an audit Guest • Nov 2017 Disagree Agree
Gtmetrix 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... Free Web Performance Monitoring Add a feature 13 Like
WebPagetest Run a free website speed test from multiple locations around the globe using real browsers (Firefox, IE, Chrome, Android and iOS) and at real consumer connection speeds.... Free Open Source Web No features added Add a feature 5 Like
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. Freemium Web Performance Monitoring SEO Audit Side-by-Side comparison Add a feature 17 Like
PageSpeed Insights PageSpeed is addon for Firebug (debugger addon for Mozilla Firefox ) for analyzing of page loading process and suggesting to webmaster how speed up page loading. Free Open Source Mac OS X Windows Linux Firebug Chrome ... Firefox No features added Add a feature 15 Like
Yellow Lab Tools Yellow Lab Tools checks a website for both it's performance and the quality of the HTML, CSS and JavaScript code. The application is available online and as... Free Open Source Web No features added Add a feature 4 Like
Site monitoring Free open-source website monitoring software, easy to set up and use for monitoring web sites. You can monitor single web pages, multiple web pages, pages in sitemap and... Free Open Source Mac OS X Windows Linux Uptime Monitoring Add a feature 5 Like
Yahoo! YSlow 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... Free Open Source Mac OS X Windows Linux Firebug Chrome ... Safari Opera Firefox No features added Add a feature 5 Like
Site Relic Site Relic is a FREE toolbox where you can test your website for performance & security in seconds without user registration. Freemium Web No features added Add a feature 1 Like
StatusCake Tools StatusCake Tools allows you to check the speed and load time of your website. Simply enter the website URL and check one of the locations from around the world you want... Free Mac OS X Windows Web No features added Add a feature 2 Like
WebO (Web Optimizer) This project has been launched after the Russian web conference ClientSide2007. The goal was to gather not only theoretical information about websites speeding-up, but... Free Web No features added Add a feature 1 Like
neXpert neXpert is an add-on to Fiddler Web Debugger which aids in performance testing web applications. neXpert was created to reduce the time it takes to look for performance... Free Windows No features added Add a feature 0 Like
PageSpeedAlarm.com Be notified if your Google PageSpeed falls. Free Web No features added Add a feature 2 Like Discontinued Now redirects to https://www.orbonline.co.uk/
Calibre Performance monitoring that gives the page speed insights you need to improve customer experience. Commercial Web No features added Add a feature 1 Like
Checkbot Boost your SEO, speed and security: Checkbot for Chrome crawls your site to test you’re following over 50+ best practices. Test 1,000s of pages in minutes for broken... Freemium Mac OS X Windows Linux Chrome OS Chrome Google Chrome extension SEO Audit Add a feature 1 Like
