Cluster - A beautiful and easy way to collect and view inspiration
Yandex.Images - search for images on the internet, search by image
Notabli for the Web - Childhood, privately shared & effortlessly organized
TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.
Flashgap - Time-delayed photo-sharing app of last night's embarrassment
SauceNAO - SauceNAO is a reverse image search engine.