1. Developers.google.com/pagespeed - The official speed test site of Google which shows you full report from A to Z that which script takes too many times to load. This one is the best tool by Google to check our website performance speed.
2. Self Seo Website Speed Test - Gives you full report of your website speed test.You can also compare your website speed with the sites of your competitors.
3. iWebTool Website Speed Test - The best site I like and I use this site many times to check my site speed. This can also offers Free webmaster services including SEO, Search Engines, Backlink Checker and Find a list of backlinks linking to a specific website Index Checker and lots more services they provide.
4. WebPageTest - It will show you the first view’s load time in seconds. Another table will show you the time it took to fully load the website after the first view along with the page’s size in bytes.
6. WhichLoadsFaster - Pages compete head-to-head in your browser to see who's the fastest.
7. SubmitPlus - Submit Plus is another free online application that tests website loading speeds including components like modem speed and advertisements. It takes about 60 seconds for the website to show results.
8. Web Page Analyzer - Free Website Performance Tool and Web Page Speed Analysis.
10. WebWait - See how fast your website loads, test the speed of your ISP/website connection, with the WebWait.
11. Web Tool Hub - Website Tool Hub tool checks the website load time and free web tools and webmaster services. Free SEO tools like domain checkup & link popularity, HTML & DNS, outbound links and other useful tools.
13. Speed Test Results - This site can tell with Internet Connection Speed based.