The Open Factory Twin (OFacT) project aims to provide a digital twin for production and logistics environments. Digital Twins (DT) represent their environment as a virtual model of all relevant parts of the real system. OFact is meant to support the design, planning and operation control of discrete material flow systems and thus support management of the system during the whole life cycle. The first release contains only the data model (state model). However, soon further parts of the project will become open source. The aim is to offer an example case (bicycle world) that can be simulated (agent control) and analyzed (scenario analytics).