Okamoto Hidetaka

This plugin is very simple.Exchang viewport by using jQuery & jQuery Cookies.
IF you installed, your responsive website can show PC view in mobile devices.
Thanks for
Using BlackFlag’s jQuery. 
URI:<a href="http://black-flag.net/jquery/20140408-5086.html" rel="nofollow ugc">http://black-flag.net/jquery/20140408-5086.html</a>
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Viewport Exchanger

There is plugin switching the viewport  of PC view and Mobile view.

Code for the People Ltd

Scott (@scottsweb)

Test your responsive website from the WordPress admin bar. This plugin uses the excellent <a href="http://lab.maltewassermann.com/viewport-resizer/" rel="nofollow ugc">Viewport Resizer bookmarklet</a> to add a responsive button to the WordPress admin bar. Once pressed you can easily test your site in a range of common viewport sizes (e.g. iPhone, Tablet and Desktop).
The plugin is handy for testing during development and also for writers and editors to preview their content on different devices.
Banner illustration above by <a href="http://gemmagarner.com/" title="WordPress design and illustration" rel="nofollow ugc">Gemma Garner</a>.
<a href="http://scott.ee/" title="WordPress web design Hampshire" rel="nofollow ugc">a plugin by Scott Evans</a>

Responsible

I first heard about this plugin via the WordPress Plugins A to Z podcast. 
The name was catchy, so when I found myself doing responsive styling work today, I thought I'd try it out. 
All I can say, is that the interface alone makes this plugin stand out.
Responsive coding can be painful, but this plugin adds order to what can become a nightmare of manually resizing your browser window.
5 stars from me. Very nice.



Slick UI makes responsive testing more fun

Viewport resizing comes to the WordPress admin bar.

Viewport Exchanger vs Responsible