PageSpeed Insights
Website & Performance Monitoring | Pingdom
Tips and Tools to Ensure Speed Doesn’t Kill Your Site
Impatient Web Users Flee Slow-Loading Sites - NYTimes.com
Speed Is A Killer - Why Decreasing Page Load Time Can Drastically Increase Conversions
GTmetrix | Website Speed and Performance Optimization
WebPagetest - Website Performance and Optimization Test
Website speed and loading time check
Load Impact - Free web site load test
Free web site speed test - website speed analysis
Pingdom Tools
Pingdom Tools
Web Page Analyzer - free website speed test website optimization tool check website performance report webpage speed tool download speed test
Website Speed Test at iwebtool.com