TinEye - Reverse Image Search to help find an image's source, duplicates or altered versions.

QR Droid - QR Droid Zapper

GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.

ZXing - Barcode Scanner for Android

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.

UpCode - UpCode is a highly developed mobile access & interaction MAI technology that turns mobile...