Dropbox is one of the largest storage solutions companies in the world. Dropbox has acquired a cloud-based photo library company called Snapjoy. Dropbox and Snapjoy were both incubated by Y Combinator. Snapjoy’s platform is able to collect photos from multiple sources like Flickr, iPhones, desktops, etc. Snapjoy users can share all of their photos or some of them. They can also invite certain friends from different social networks to view the photos.