ImgShare.io can be used to host images and albums. Very quick interface and loads images very fast.
picinfinity - Picinfinity is an image retaining/proxy site.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
PostImage.org - Provides free image upload and hosting integration for forums.
Libris - Libris is an asset management for photos and videos.
imgbox - Imgbox is a free image hosting service.
Flickr - image and video hosting website