GPU-powered watercolor painting tool Expresii arrives—that’s the URL I picked, back circa 2005 (when men were men & we had to self-host all our videos!), to express my admiration for Nelson Chu’s Moxi watercolor app. Harnessing graphics processors to create realtime natural-media simulations has been a passion of his for the better part of 20 years. We hosted him as a summer intern on Photoshop, but we could never quite manage to marry this tech to the, ah, somewhat vintage underpinnings of PS. Now Nelson has launched the latest incarnation, Expresii ($59 for Windows). Check it out:



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