Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
calibre - Ebook manager, viewer & converter
Flickr - image and video hosting website
FBReader - FBReader is an e-book reader for various platforms. Features:
Photobucket - Photobucket offers image hosting and free photo and video sharing.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.