I was unaware of the recent MX/Mono turn on the Cumulus front. Just checked. To be honest It's over a year since I last visited Sandaysoft forum and was left with the impression that the future of the program was... well... a bit "clouded" 
I am glad to see it got new breadth. Maybe I do not need to scrap my old website templates (I placed a lot of work on tweaking details) after all...
There's a thing of two Cumulus still does better that WeeWX right now, although the later seems to be better served project grasp and philosophy wise. Notoriously it seems to have a much more simple and robust system for creating and delivering custom extensions/add-ons. And Python is likely more popular than Mono.
I am glad to see it got new breadth. Maybe I do not need to scrap my old website templates (I placed a lot of work on tweaking details) after all...
There's a thing of two Cumulus still does better that WeeWX right now, although the later seems to be better served project grasp and philosophy wise. Notoriously it seems to have a much more simple and robust system for creating and delivering custom extensions/add-ons. And Python is likely more popular than Mono.