Color View Finder - Real time color palette from your iphone camera
Site Palette - Get the essential colours from any website
A Color Story - The photo app to colourize your life
Color Palette Generator - Enter the URL of an image and find its color palette
Trigraphy - Photo editing app that allows you to make mosaic/abstract looking art.
Colour Contrast Analyser - TPGi's ADA Color Contrast Checker checks for helps determine the accessibility the contrast ratio of two colors for WCAG AA and AAA.