UploadHouse - Thumbnail and resize your photos and images
Color Palette Generator - Enter the URL of an image and find its color palette
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
Color Hunt - Curated collection of beautiful colors, updated daily
Img.vision - Image hosting & video hosting for eCommerce sellers
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!