DotImage will store the text "Atalasoft dotImage x.x.xxxx.xxxx" in the Software tag when saving TIFF files using the TiffEncoder.  A customer asked us the other day how to prevent DotImage from saving this tag.  While there is a way to prevent it (see below) the best solution is to save your own TIFF Tag.  To "prevent" the tag from saving you'll actually need to save a temporary file, then use TiffFile to remove the tag from the existing TIFF.  More information is located in the new knowledgebase article that was recently written.

Future versions will hopefully allow you to modify this tag while encoding the image.

For viewing TIFF Tags, you can use our metadata demo, or for a nice free program, try ASTiffTagViewer.