I looked at just about every option out there, and as an extensible starting point, I think that FullCalendar is by far the best of the bunch. @yehster I am of the opinion that the existing tables re: the external components that touch them, are less difficult to adapt to a new structure than creating a new structure for the FullCalendar base. The components of PN Calendar we actually used were not very extensive. That said, I was under the impression that FullCalendar just used a json file named “events” or something.