What is .SOB file extension?
Graphics file used by Impress, the graphics editing program included with the OpenOffice.org productivity suite; contains a fill pattern used for painting the background of an image with gravel, leaves, flowers, or other patterns.
You can access the bitmap styles in Impress by selecting Format ? Fill/Area ? Bitmap from the application menu.
NOTE: OpenOffice.org was replaced by Apache OpenOffice in 2012.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.