Judging by the name and icons... I would say Foreca makes this applet. It's listed as being made by a "commercial partner", so Nokia probably paid them to do it. Which means not much support, and no community interaction. I haven't even tried Foreca, but I prefer OMWeather, too :-P

Hmm... with the new station support, perhaps someone could make a package for grabbing data from Foreca?