The Rosetta DSL is an open-source project initially developed by REGnosys. REGnosys welcomes outside contributions that help keep it technology- and platform-agnostic. Code generators in several programming languages have already been contributed by the user community.

Model components are organised into projects in a source-control repository. Some projects are openly available on the platform, under license terms and a governance framework that reflect how their owners wish to control their distribution and contribution

The Rosetta Products are connected to the source-control repository holding all the model components. The Rosetta Products provide a complete model development kit allowing users to view or edit existing projects, create new ones, or use the models to develop new applications and services.