The Oryx workshop gives a comprehensive overview of the fundamentals of the extensible, web-based modeling platform Oryx that consists of a model editor and a repository to store and manage models. The presentation gives insight into the history and the intentions to develop a platform that supports research in modeling, particularly process modeling. After introducing the platform and its software architecture, the presenter focuses on extending the editor with new modeling languages through stencil sets, and new functionality through plugins. Finally, a brief insight into the structure of the project is given as a starting point to implement new features.