Img.vision - Image hosting & video hosting for eCommerce sellers
GitHub Pages - A free, static web host for open-source projects on GitHub
UploadHouse - Thumbnail and resize your photos and images
Paperplane.io - Static web hosting using Dropbox folders or GitHub repos.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
RawGit - RawGit serves raw files directly from GitHub with proper content-type headers.