iPad app sketch

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Sketched Wireframe

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Early Ember sketches in color

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OnlyJames Wireframe Sketch of Article Detail

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CommLogix Wireframe Sketch

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Early BusinessWeek.com Design Sketch

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BPG – UI Sketch 1

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HBO SATC site

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Search Ideas Wireframe v1

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sketch: vimeo clip page

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“Scratch-Off” Concept

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Janko At Warp Speed home page sketch

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Heartland Funds Redesign: Main & Landing Page Wireframes

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UserScape Wireframe Sketch

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CommLogix Wireframe Sketch

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Data Techniques Mainpage Wireframe v1

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Coastal Capital Partners Wireframe Sketch

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Rough wireframe for the new Account Planning Group

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Mobile Platform Redesign 5

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World of Color Microsite Wireframe

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Wireframe 960gs

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Wireframe: Giant Hello Splash Page

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Wireframe: Giant Hello Splash Page

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Prototyping a webshop

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oschina 收录了一些界面原型设计软件，详情请看 这里。
Source:  http://designmodo.com/web-mobile-wireframe-sketches/