ArgyllCMS - An ICC compatible color management system, available as Open Source.
Simple Scan - Project information. Part of: The Gnome Project. Maintainer: Simple Scan Development Team. Driver: Simple Scan Development Team. Licence: GNU GPL v3.
Profile Prism - Profile Prism is software that allows monitor calibration and can generate ICC profiles for digital cameras, scanners, and printers using an IT8 reference target.
iCopy Free Photocopier - iCopy Free Photocopier is a program that allows the Windows users to use their scan and printer to get their document and images scanned in the format they want.
ColorSync Utility - ColorSync Utility is software that ships with macOS. It is used for management of color profiles and filters used in Apple's PDF workflow, or applying filters to PDF documents.
XSane - A good proposal for SANE-2 has been written.