RePROSitory: a Repository platform for sharing business PROcess modelS Flavio Corradini, Fabrizio Fornari, Andrea Polini, Barbara Re, and Francesco Tiezzi School of Science and Technology, University of Camerino, Italy Abstract. The BPM community can certainly benefit from the adop- tion of open science principles. The availability of business process mod- els can make BPM research results more controllable, replicable, and comparable. Unfortunately, in our experience, it is quite difficult to find open collections of models suitable to effectively validate research pro- posals in the BPM field. To address this issue, we have developed a web-based repository of process models, named RePROSitory, for shar- ing BPMN models, making them accessible to the community. We have started to systematically populate the repository with a collection of BPMN models, manually selected from the literature. The experience of models retrieval from RePROSitory is enhanced by the implementation of more than two hundreds quality metrics. These allow researchers to select from RePROSitory a set of models that they judge more suitable for the experiments they want to run. 1 Introduction Open science principles [9] ask for reproducibility of experiments reported in published research works. They can certainly contribute to enhance the quality and relevance of the research carried out by the BPM community. These prin- ciples intend to improve the capability of checking, and possibly re-validating, the results of a reported research effort. Referring to research on business pro- cesses, this demands for a common set of models to conduct research, validate methodologies and techniques, and compare tools performance. We focus our contribution on models designed using the BPMN 2.0 nota- tion, which has acquired a clear predominance among the various proposals. Up to now, the community can benefit from few available BPMN model reposito- ries for conducting experiments. The most important ones are “BPM Academic Initiative Model Collection”(https://bpmai.org/) and “Camunda BPMN for Research” (https://github.com/camunda/bpmn-for-research). These repos- itories are of great value for the entire BPM community, as they make available a huge amount of models that anyone can access to support their studies. In the past, we used those repositories for validating our research work (e.g., the framework in [1,2]). Despite this, these model repositories present several issues. First of all, from a study we conducted on the two repositories, we discovered that around 14% of the models present issues related to the usage of the BPMN