The ultimate tool for responsive screen size sketching. Heavy-duty gauge stainless steel ruler with pixel increments. Markers for mobile, tablet and widescreen (laptop) sizing.
http://www.uistencils.com/products/pixel-ruler
App Icon Template that, through Smart Objects in Photoshop, attempts to automate the process of rendering the various sizes that needs to be bundled with iOS Apps
http://appicontemplate.com/
Feb13
Gridpak
Gridpak is a responsive grid generator created by Erskine Design
http://gridpak.com/
Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are
http://html5please.us/
Colors is a free simple application for graphic designers, web designers, and anyone else who needs to be able to pull colors from what you can see on the screen.
http://mattpatenaude.com/
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