7 Free Tools For Testing Responsive Layouts
Every modern website needs a responsive design. This does require more effort but the end result is worthwhile.
I actually recommend testing your ideas with responsive design tools to see how your site looks at each stage. You can look for usability issues on different screen sizes all from one handy tool.
And these free tools are my top picks for responsive testing since they’re all super easy to use. Best of all these support many device sizes so you can get a good feeling for how your layout should look from smartphones to desktops.
The XRespond app calls itself a “virtual device lab” and I’d say that’s pretty spot on.