Search by image is a type of online service software and application that allows users to search for information related to a particular image or picture. It is a convenient and efficient way to find out more about any image that you come across online. This service is typically provided by search engine companies, such as Google, Bing, or Yahoo. It works by scanning the image and comparing it to a database of images, then providing the user with relevant links to websites, articles, and other sources of information relating to the image. Search by image can be used to identify people, places, or objects in an image, as well as helping to track down stolen images. It can also be used to find similar images and find out more about them.
TinEye
NooBox
Google Lens
CamFind
Search by Image (by Google)
Plaghunter
Image Analysis Toolset
Safe Design
Knows more images than google with glasses!