Flickr - image and video hosting website
ShoeBox - Free unlimited photo storage, so you can rediscover your photos anywhere. Available for iPhone, iPad, Android, Mac and PC.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Snapchat Memories - Save and search for snaps on Snapchat
PhotoPrism.app - PhotoPrism® is an AI-Powered Photos App for the Decentralized Web. It makes use of the latest technologies to tag and find pictures automatically without getting in your way. You can run it at home, on a private server, or in the cloud.
Photobucket - Photobucket offers image hosting and free photo and video sharing.