DtaViewer allows you to select one dta file or a folder containing dta files. It will quickly display those files and let you do some customizations to the graphical dispay. Including display of the m/z error, zooming and many further options. Finally, you can easily export it as a .png file.

Requirements:
* Java

The license of this software is Freeware, you can free download and free use this graphing software.