Xpm extension is related to X11 Pixmap Graphic. You have chance to open xpm files with Acdsee or Gimp softwares.

These are the image files which used with Windows operating system. To open XPM files which used raster (pixel based) system, you may use Acdsee or Gimp softwares. Similarly, .xbm files  also produce images by using fixed characters. 
To get detailed information about the softwares, please take a look links below.

What to use xpm

ACDSee, Gimp

which page related to xpm file


xpm Related Searches

You can check related links about xpm fileextension.