NAPS2 - NAPS2 is a document scanning application with a focus on simplicity and ease of use.
Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.
VueScan - Third-party software for film scanners and flatbed scanners.
XSane - A good proposal for SANE-2 has been written.
PaperScan - PaperScan Scanner Software is a powerful TWAIN & WIA scanning application centered on one idea: making document acquisition an unparalleled easy task for anyone.
Windows Scan - Scan (and save) documents and pictures