What web page speed testing tools do you prefer to use?

pingdom.com is good but for clients I usually prefer http://developers.google.com/speed/pagespeed/insights/

Hello Hira,

 Here is a very good free tool:

http://gtmetrix.com/   They also have some paid features, but the free one is very useful.

Google Speed Test also provide useful insights:

http://developers.google.com/speed/pagespeed/insights/

https://www.pingdom.com

Off-course google product.

Well, Deeb introduced a very useful tool, but it seems that this tool only performs internet speed test  instead of web page speed testing. Please correct me if I am wrong.