AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
CamFind - CamFind is the very first mobile application that can photograph, identify, and provide information...
Top Similar Sites - Top Similar Sites helps you find similar, alternative or related sites to any website instantly.
Exif Metadata Image Search - Search image metadata on the Internet. Exif image metadata search engine
SimilarSites - Easily find more sites like those you like.
GazoPa - 27 Oct 2009 . Gazopa, a search engine that uses features from an image to retrieve similar images, has been in private beta since it launched during TechCrunch50 last year.