The General Estuarine Transport Model (GETM) is freely available for anybody under the GPL version 2.
This site provides only the basic information on how to obtain and compile the code as well as a few simple examples on how to run the model. Previously, the site was more feature rich but it has shown to be difficult to have proper maintenance so instead of having a rich – but wrong site – a more minimalistic approach has been chosen with limited – but up to date – information.
So for any further questions users are asked to please subscribe to the GETM users mailing list.
On this site only information related to the content of the master branch of GETM is included. At IOW a slightly different version of GETM is available. Further information can be obtained from here. Note that the git repositories are different.