The Indico event-management tool has been in development at CERN for two decades at this point. The MIT-licensed web application helps organize conferences, meetings, workshops, and so on; it runs on Python and uses the Flask web framework. Two software engineers on the project, Dominic Hollis and Tomas Roun, came to EuroPython 2025 in Prague to talk about Indico, its history, and some metrics about its community. There is a bit of a connection between Indico and the conference: in 2006 and 2007, the tool was used to manage EuroPython.