Giggity (schedule viewer)

Browser for schedules of conferences like MCH2022, FOSDEM, LCA (linux.conf.au), CCC/37C3 and many more. (Supported formats: Pentabarf/Frab/Pretalx/xCal/iCal)

It lets you organise your visit - select talks to be reminded of (with warnings in case of conflicts) or hide the topics you're less interested in. Schedules are shown in whatever format you like - block schedules, plain timetables, quick search or on the day itself a brief now-and-next screen.