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Pencil
Firefox add-on that helps you creates GUI prototype and sketching....
Grease Pencil
An Adobe AIR application designed to help you with your presentations, prototyping or any text that you want to highlight on the screen...
Pencil Draw
Give a fresh look to your images using this great Photoshop action....
Pencil Check Pro
Pencil Check Pro is the most flexible line testing software available in the industry...
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Ecth-a-Sketch
Software to teach expressions and statements in an interactive environment...
expression statement laboratory laboratory expression laboratory statement
Sketch-to-collage
Image-search based tool to aid you in the creation of image collages...
AKVIS Sketch
Turn your digital photographs into pencil sketches or watercolor paintings....
Escher Web Sketch
Allows you to draw repeating patterns...
Photo Artista Sketch
Converts your photos into realistic handmade sketches...
Sketch Synth FX
Add layers onto samples and create cool sounds...