Picaboo - Picaboo is a web-based image publishing and printing service that allows you to create personalized photo books, cards, and scrapbooks.
Flickr - image and video hosting website
Juicebox - Spectacular HTML5 Image Galleries Made Easy
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
novaGallery.org - Beautiful php image gallery - easy to use, with modern responsive design, private mode, themes, languages
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.