Flickr - image and video hosting website
Rasterbator - Wall art from any image
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Easy Poster Printer - Ever wanted to create your own poster?
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.
Block Posters - A free poster maker to create massive wall posters from your own images! Free!