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General information

[ About GRASS ]

There are now 3 GRASS branches:

5.4 is the stable branch, from which the various 5.4.x releases are derived. Future releases from this branch will contain only bug-fixes or minor, backward-compatible improvements. 5.4.0 was released 5 November 2004. See See related web pages.
5.5 is the dead-end development version of 5.4. Only minor changes that are not forward compatible with version 5.7 onwards go in here. Also, minor bugfixes will typically go into 5.5 initially, then get merged back to the 5.4 branch later. There are also some minor changes that are too intrusive to go into the 5.4.x releases (e.g. because they break backwards compatibility, or introduce additional dependencies). All new development takes place in 5.7+.
6.x is the active version which was previously referred to as "5.1". See related web pages. Current development effort is strongly focussed on this version.

For features details, please refer to the Roadmap.

Status of version:

GRASS 5.4.0: released 5 November 2004. GRASS 5.4.1: released 26 July 2007.

What's new in current release of GRASS 5.4.x?

See Press release, NEWS list, and for details, please read the detailed changes HISTORY.

How stable is GRASS 5.4.x?

GRASS 5.4.x has been tested on Linux, MacOSX, WindowsNT/2000/XP and Silicon Graphics Irix systems. It is recommended for daily production usage.

Large File Support

From 5.4.0 onwards GRASS supports reading and writing large files (> 2GB) if it is possible in your operating system. If you compile with -D_FILE_OFFSET_BITS=64, you should be able to have raster maps which are larger than 2Gb.

GRASS 5.4 documents

Bug reports

Clustered GRASS GIS

GIS related work is regularly CPU-intensive - as CPU power becomes cheaper nowadays, GRASS might be run in clustered environments. There are several options to parallelize GRASS:


GRASS Credits page (incomplete) - List of GRASS Development Team members


Ok, ok. How can I get current GRASS 5.4.x?

Go to the download page and start downloading!

Some additional tidbits you may need...

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