gscan2pdf
A GUI to aid the scan-to-PDF process

sane-pygtk
A minimal program to work with scanner.
Simple Scan
Scan Documents

Skanlite
Scan and save images

XSane Image scanning program
A program to work with scanner. Can be used as a scanning, copier, OCR, fax tools.

gImageReader
OCR application
Scan Tailor
Interactive Post-Processing Tool for Scanned Pages

XSane
Acquire images from a scanner

YAGF
Graphical frontend for Cuneiform and Tesseract

Image Scan! for Linux
Scan documents and images with your Epson scanner
Document Scanner
Make a digital copy of your photos and documents

Paperwork
You can grep dead trees

XSane Scanner Tool
Acquire images from a scanner
gOCR
gOCR is an optical character recognition program