This demonstration paper describes the ProM process mining tool. Process mining techniques attempt to extract non-trivial and useful process information from so-called "event logs". ProM allows for the discovery of different process perspectives (e.g., control-flow, time, resources, and data) and supports related techniques such as control-flow mining, performance analysis, resource analysis, conformance checking, verification, etc. This makes ProM a practical and versatile tool for business process analysis and discovering