2 Resizer – Google Design
An interactive viewer to see and test how digital products respond to material design breakpoints across desktop, mobile and tablet.
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2 
1 Responsive Design Bookmarklet
A handy tool for responsive design testing. Displays the current Media Query.
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1 Responsivator
Online-Tool for viewing and sharing how website look at different screen sizes.
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1 Am I Responsive?
Show off how responsive design looks across different browsers easily with this 4 in 1 viewport tool. See how your […]
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1 Browser Shots
Browsershots makes screenshots of your web design in different operating systems and browsers. It is a free open-source online web […]
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1 Screenqueri.es
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1 Adobe Edge Inspect
Desktop Application, Mobile App
Preview & inspect web designs on devices.
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1 Responsinator
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1 Font Draggr
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1 Responsive Design Testing Tool
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1 Screenfly
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Like IE Tester
IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE10 preview, IE9, IE8, […]
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Like Responsivepx
Enter the url to your site – local or online: both work – and use the controls to adjust the […]
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Like CSS3 Please!
A cross-browser CSS-rule generator.
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Like DeCSS3
Use this bookmarklet to get a whiff of what your site will look like on older browsers that don’t support […]
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Like Opera Mini Simulator
Opera Mini Simulator is a demo of Opera’s feature phone browser. It can be accessed from any Java-enabled Web browser, […]
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Like Opera Mobile Emulator
Opera Mobile Emulator is the desktop version of Opera’s smart phone browser. Opera Mobile Emulator renders pages as close as […]
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Like Simple Media Queries Tester
The Media Queries are a solution, which also have its advantages and disadvantages. It was a disadvantage, when using, that […]
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Like Responsive.is
Display and present responsive web designs.
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Like wordmark.it
wordmark.it helps you choose fonts by quickly previewing them in the browser.
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