We all know that Media Queries are one of the three key ingredients for a responsive design, but not everyone understands that media queries go beyond min/max-width, orientation and pixel density.
This website allows you to test the devices you are using as well as build up media queries for use on your own site.
The easiest way to share localhost web servers to the rest of the world
Viewport resizer is a browser-based tool to test any website's responsiveness. Just save the bookmarklet, go to the page you want to test, click on your created bookmarklet and check all kinds of screen resolutions of the page.
Remote Preview allows very fast previewing of different URL’s to check for possible layout problems, which can then be debugged using various other tools depending on the platform where they occur.
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