imgbox - Imgbox is a free image hosting service.
picinfinity - Picinfinity is an image retaining/proxy site.
Flickr - image and video hosting website
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.
Libris - Libris is an asset management for photos and videos.