* The current version is GSIM v1.2. The links below are to outdated versions of the GSIM, retained for archive purposes only.
- GSIM v1.1 (December 2013)
- Version 1.0 (December, 2012)
- Version 0.8 (September, 2012)
- Version 0.4 (May, 2012) released for public comment
- Version 0.3 (March, 2012)
- Version 0.1 GSIM Common Reference Model (June, 2011)
- Past workshops on GSIM development