Interesting color related tool. One tool lets you choose up to 5 colors, and the collage wall on the left will auto select photos from Flikr that fit your color theme. Another tool lets you upload an image and it will pick out a selective palette for you based on that image.
http://labs.tineye.com
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Human proportion calculator.
http://hpc.anatomy4sculptors.com
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Should still be free, albeit limited download size per 24 hr. Lots of clean and even pre-tiled textures.
http://cgtextures.com
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Random human pose photo generator for life drawing simulation. Can set gender, coverage, and time.
http://artists.pixelovely.com/practice-tools/figure-drawing
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You pick a color, and this generator will help you pick out a set of colors based on your choice. You can set it to pick out complement, triad, tetrad, analogic, and accented analogic. It gives the exact number of each generated color for your graphics program. It even gives example of how each color scheme will look in a mock-up web page.
http://colorschemedesigner.com
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