NAPS2 - NAPS2 is a document scanning application with a focus on simplicity and ease of use.
Windows Scan - Scan (and save) documents and pictures
Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.
CloudScan - CloudScan. Free Scanning Software. (Scan to PDF and TIFF Everywhere Easily)
XSane - A good proposal for SANE-2 has been written.
Scanitto Pro - Scanitto Pro is a simple and easy to use scanned imaging software. You can easily save the scanned images from your imaging device through this program to varying document styles and file types. Read more about Scanitto Pro.