Color Palette Generator - Enter the URL of an image and find its color palette
Percolator - Percolator: the always fun, supremely unique photo app that is sure to surprise you! FEATURES:
Material Palette - Generate and export your Material Design color palette
AndreaMosaic - With AndreaMosaic you can create your own photographic mosaics made with your own pictures.
ColorFavs - Generate color palettes from images, urls or randomly
WidsMob Montage - Make stunning mosaic photos or montage shape with tiles, which supports both JPEG and PNG files.