NAPS2 - NAPS2 is a document scanning application with a focus on simplicity and ease of use.
Google Lens - Discover information about something by taking a photo
Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.
GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.
XSane - A good proposal for SANE-2 has been written.
OpenScan - FOSS Document Scanner