dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
Flickr - image and video hosting website
Duplicate Cleaner - Duplicate Cleaner: the fastest and most popular tool for finding duplicate files. Over 1 million downloads: Get your copy now! Free and Pro versions available.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
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.