1.Google Page Speed Insights
https://developers.google.com/speed/pagespeed/insights/
2.GTMetrix
https://gtmetrix.com/
3.Pingdom
https://tools.pingdom.com/fpt/
4.Webpage Test
http://www.webpagetest.org/
5.Load Impact
https://loadimpact.com/
6.Website Speed Test
http://www.pagescoring.com/website-speed-test/
7.Internet Marketing Ninjas
http://www.internetmarketingninjas.com/pagespeed/
8.Show Slow
http://www.showslow.com/
9.Dotcom Monitor
www.dotcom-monitor.com/
10.Google Analytics
https://www.google.com/analytic