Whats new in version 6.4.3-1:• Documentation: various improvements
• GRASS libraries: veditlib: various fixes, minor improvements
• GRASS libraries: memory leak fixed in ellipsoid code
• GRASS libraries: Python/SWIG interface updated (new examples added)
• GRASS libraries: re-enabled automatic creation of VAR file (#7)
• GRASS modules: d.vect.thematic, i.in.spotvgt, r.tileset: portability fixes (#81)
• GRASS modules: g.manual: Cygwin portability fix for browser detection
• GRASS modules: r.le.setup: fix segfault
• GRASS modules: r.in.wms: various improvements, portability fixes
• GRASS modules: r.sim.sediment, r.sim.water: various fixes
• GRASS modules: v.db.join: multi-layered vectors bug fix (#75)
• GRASS modules: v.edit: new tool chtype, some minor fixes
• GRASS modules: v.generalize: use GRASS_EPSILON as standard very small FP value
• GRASS modules: v.in.wfs: fix for unwanted 'rendered' xml (#62)
• GRASS modules: v.report, v.rast.stats: portability fixes
• Documentation: improvements for several modules
Publisher review:GRASS GIS (Geographic Resources Analysis Support System) is an open source, free software 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.
GRASS is currently used in academic and commercial settings around the world, as well as by many governmental agencies and environmental consulting companies.
Requirements:
- X11 is not required but if you prefer, there is also Grass 6 X11 version, all in the same package.
Operating system:Mac OS X 10.4.10 or later
Grass GIS 6.4.3-1 details 
