Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Img.vision - Image hosting & video hosting for eCommerce sellers
Picorator - Picorator is a simple yet powerful image sharing application developed by online communities.
BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.
imgbox - Imgbox is a free image hosting service.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.