Tools for testing Responsive Websites

I was researching different tools to test responsive websites and found a number of JScript/JQuery/CSS based utilities which helps to test your responsive website. Out of the numerous tools I researched, the following were personally the best tools available (Other tools are just a modified Jscript version of these tools. Yup, I looked into their code :-) )

MattKersley tool - http://mattkersley.com/responsive/

Resposinator - http://www.responsinator.com/

Screenfly - http://quirktools.com/screenfly

Responsivepx - http://responsivepx.com/

ResizemyBrowser - http://resizemybrowser.com/

These tools are good in terms of viewing your website in different screen sizes. The only drawback which I felt using these tools are that, you cannot test local builds i.e only after the code is deployed to the server and when the URL can be accessed through the internet, we can use this tool by directly entering the URL of the website. But, if we have the build locally in our machine and want to test the pages before deploying it to the server, it is not possible.

Try out these sites below in the above tools and you will see what I am saying.

www.starbucks.comwww.bostonglobe.com

This site has a list of almost all the responsive websites out there --- http://mediaqueri.es/