Google Lens - Discover information about something by taking a photo
Office Lens - Download this app from Microsoft Store for Windows 10, Windows 10 Mobile, Windows Phone 8. 1, Windows Phone 8, Windows 10 Team (Surface Hub), HoloLens. See screenshots, read the latest customer reviews, and compare ratings for Office Lens.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
Scanner Pro - Scanner Pro turns your iPhone into portable scanner in your pocket.
OpenScan - FOSS Document Scanner
Genius Scan - On The Go.