Geographic Resources Analysis Support System (GRASS GIS)

An open source Geographical Information System (GIS) with raster,
topological vector, image processing, and graphics production functionality
that operates on various platforms through a graphical user interface and
shell in X-Windows. It is released under GNU General Public License (GPL). 

grass-i18n+ipafont is an internationalized version of GRASS,
from GRASS i18n Project sponsored by IPA, Information-technology Promotion
Agency, Japan, with a Japanese TrueType font set (IPA font).
While the i18n GRASS is released under GNU GPL, redistribution of
the font set is allowed only when it is done with the i18n GRASS.
For more information, see $PREFIX/share/fonts/TrueType/license-ipafonts.eucjp
(in Japanese).

WWW: http://grass.itc.it/
WWW: http://www.grass-japan.org/FOSS4G/GRASS/grass-inten.html