Download source code if you want to develop your own GRASS extensions or run GRASS on a special computer platform. The source code needs around 350MB+ of disk space.

[ GRASS: 6.4 stable | 7.0 beta | 7.1 devel ]

GRASS GIS 6.4 (stable)

Most users will want to install this officially released version.
Release notes

Source code:

Manuals:

GRASS GIS 7.0 (beta)

Upcoming stable. See announcement.
Very promising (see New Features) and usually works. Direct compatibility with earlier versions is not guaranteed but provided with automated conversion tools (affects vector topology).

Source code:

Manuals:

GRASS GIS 7.1 (development)

Unstable and experimental, but very promising (see New Features) and usually works. Direct compatibility with earlier versions is not guaranteed but provided with automated conversion tools (affects vector topology).

Source code:

Manuals:

Download from GRASS GIS SVN repository

The latest GRASS GIS development source code and stable release branch are available from the OSGeo Subversion server, see GRASS GIS trac: Downloading GRASS GIS Source code. See there for the various branches.

License of GRASS GIS

GRASS GIS >= 5.x is published under the GNU General Public License (GPL) (see GRASS 6.4 statement: COPYING).

Citing GRASS GIS Software

Please cite GRASS GIS when using the software in your work. See here for some choices depending on the version used.

Old GRASS GIS versions

Detailed GRASS GIS Releases page with links to source code back to the year 1990 etc.

Distribute GRASS GIS!

If you are a software distributor (for example packaging Linux distributions) you are welcome to add GRASS GIS to your software collection under terms of GNU General Public License (GPL). We would be glad to receive a note that you distribute GRASS GIS.

Download >> Software >> Source code | Last change: 02-Apr-2014