Open Camera - Open Camera is an open-source camera app for Android phones and tablets.
Yandex.Images - search for images on the internet, search by image
VSCO - VSCO® is an art and technology company empowering people everywhere to create, discover, and connect. CompanyVSCO® is a trendsetting art and technology company that .
TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.
Camera+ - With Camera+ you’re able to use your iPhone to shoot the best photos you possibly can.
SauceNAO - SauceNAO is a reverse image search engine.