You can run iCopy by just pressing the button of your scanner. Its simple user interface lets you manage scanner and printer options, like brightness, contrast, number of copies in a couple of seconds. You can save images to file or export to PDF. iCopy is small and no installation is required. And, most importantly, it is free and opensource!
Control various settings with a few clicks including Scaling, Resolution, Brightness and Contrast
iCopy supports Automatic Document Feeders, so that you can copy a large amount of pages automatically
iCopy can save your acquired pages to PDF, without the need of other software
Scan in color, grayscale and black&white
Preview the acquired page before printing.
iCopy is licensed under the GNU General Public License v3
Download the installer for iCopy. You can find the portable .zip here.