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Sketch Measure

Friendly user interface offers you a more intuitive way of making marks.

Sketch

The digital design toolkit

PrincipleRepo

Free, High Quality Principle Resources

Fribbble

Free PSD files and other free design resources by Dribbblers.

UIkit.me

最便捷新鲜的uikit资源下载网站

uplabs

Daily resources for product designers & developers

ui8

UI Kits, Wireframe Kits, Templates, Icons and More

稀土区

优质设计开发资源分享

Designmodo

Web Design Blog and Shop

云瑞

优秀设计资源的分享网站

Freebie Supply

Free Resources For Designers

Freebiesbug

Hand-picked resources for web designer and developers, constantly updated.