Here at Eindhoven University of Technology, we have been developing the process mining workbench, ProM, for over 15 years.We use ProM mainly as an academic tool, and therefore, it has many, many features. So last time we counted, we had over 1,000 plugins, and each plugin provides a single feature. We had over 1,000 plugins in this framework. And although we are currently actively developing this, the quality of the plugins varies. So some plugins are very frequently used and well tested. Others are developed for particular research for a particular publication, and sometimes even for a particular data set. And also, some users might find the user interface a bit less friendly than the average commercial tool.