ProM 6 [4, 11] is an open-source tool specially tailored to support the development of process mining plug-ins. This tool contains a wide variety of plug-ins. Some of them go beyond process mining (like doing process verification, converting between different modelling notations etc). However, since in this tutorial our focus is to show how to use ProM 6 plug-ins to answer common questions about processes in companies, we focus on the plug-ins that use as input (i) an event log only or (ii) an event log and a process model. The figure below illustrates how these plug-ins can be categorized.