Palettte App - Create, analyze and edit smooth color palettes
Color Palette Generator - Enter the URL of an image and find its color palette
HueSnap - A tool to create color palettes through your images
Material Palette - Generate and export your Material Design color palette
Klart.io Colors - A data-driven collection of beautiful color palettes 🌈
Color Palette Manager - This nifty app helps you create, manage and share palettes.