The greatest collection of open source and free software
gscan2pdf is a GUI to ease the process of producing a multipage PDF from a scan. (GPL)
Linux - FreeBSD
XSane is a GTK+-based X frontend for SANE-library. (GPL)
Linux - FreeBSD - Windows
Use the Open Source Software Directory to find the best open source and free software for at home or in business.
Advantages of open source software are: