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
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.
CloudApp - CloudApp allows you to share images, links, music, videos and files. Here is how it works: choose a file, drag it to the menubar and let us take care of the rest.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.