KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
Flickr - image and video hosting website
Stingle Photos - Stingle Photos is a secure photo/video encryption and backup application that provides strong security, privacy, encryption and safely saves your media on cloud storage keeping you safe from data breaches and leaks.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Photok - A safe place for your photos. It stores your photos encrypted on your device and hides them from others.
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.