PlayMemories Online is described as 'Upload as many photos as you want. Easily share your memorable photos with your family and friends with Sony's cloud-based photo and video service' and is an app in the Backup & Sync category. There are more than 10 alternatives to PlayMemories Online for a variety of platforms, including Online / Web-based, Windows, Android, iPhone and Android Tablet. The best alternative is Google Photos, which is free. Other great apps like PlayMemories Online are Flickr (Freemium), Piwigo (Free, Open Source), PhotoPrism (Free, Open Source) and PhotoStructure (Freemium).
Google Photos is a photograph and video sharing and storage service by Google. It allows the users to store and share images and videos using the 15 GB free storage space of their Google Account or a Google One subscription.
PhotoPrism® is a privately hosted app for browsing, organizing and sharing your personal photo collection. It makes use of the latest technologies to automatically tag and find pictures without getting in your way.