Original GIS icons theme was created by Robert Szczepanek  and is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License . Fill free to use it for GIS software or for any other purposes. I only ask you to let me know about that and to include licence.txt file in your work.
DESCRIPTION: GIS icon theme
AUTHOR: Robert Szczepanek
CONTACT: robert at szczepanek pl SITE: http://robert.szczepanek.pl/
OSGeo community  helped in whole design process. Especially I want to acknowledge GRASS and QGIS team members for creative comments and support: Martin Landa Michael Barton Tim Sutton Borys Jurgiel
Robert Szczepanek Cracow 2009 Poland
 http://robert.szczepanek.pl/  http://creativecommons.org/licenses/by-sa/3.0/  http://www.osgeo.org/