Google Lens - Discover information about something by taking a photo
TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.
Microsoft Lens - Microsoft Lens (formerly known as Office Lens) is an all-in-one application designed for Windows, Android, and Apple devices, allowing you to capture important information from signs, PDFs, whiteboards, and more to add.
CamFind - CamFind is the very first mobile application that can photograph, identify, and provide information...
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
NISE - The NISE Image Search Engine is a reverse image search engine (like tineye.