Index of /grass

 Name                    Last modified      Size  Description
 Parent Directory                             -   
 grass6_progman/         07-Sep-2008 20:07    -   
 grass6_progman_pdf/     06-Sep-2008 17:00    -   
 grass54/                24-Jan-2008 06:02    -   
 grass62/                10-Feb-2008 08:10    -   
 grass63/                04-Mar-2008 17:22    -   
 historical/             25-Jul-2007 00:00    -

GRASS GIS download area

http://grass.osgeo.org/ (primary site)
http://grass.ibiblio.org/