GMAT makes official releases to the public approximately once every 6-12 months.
GMAT is a cross-platform application, but we publish binaries on Windows only. For other platforms, see below to start from source. The latest official version is R2012a, released May 23, 2012.
- Windows installer (get this if you aren't sure)
- Windows zip file
- Source code and data (for developers)
- All Releases (SourceForge project page)
See the GMAT development team for access.