Epson KOWA: www.epkowa.co.jp/english/linux_e/lsd_e.html
Image Scan!: www.epkowa.co.jp/english/index_e.html
Linux USB Project: www.linux-usb.org
QuiteInsane: quiteinsane.sourceforge.net/index.shtml
SANE: www.panda.mostang.com/sane
VueScan: www.hamrick.com
XSane: www.xsane.org