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.
Website Speed Test by Pingdom - Pingdom is a website performance monitoring software.
PageSpeed Insights - PageSpeed is addon for ...
HttpWatch - HttpWatch: The ultimate HTTP Sniffer for Chrome, IE and iOS
CheckPageSpeed.com - Website Speed and Performance Analyzer
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!