Dear Zafro,
I have many friends who develop websites, some remain loyal to Joomla!, including myself, but most have migrated to WordPress, and many of those have returned, because Joomla! has a captivating charm. It's very difficult for someone passionate about Joomla to switch CMS. The bad news I have is that none of the ones I know have the openstreetmap plugin for RSForm! Perhaps because it's expensive! Or for some other reason. However, I received good information about the free component zh_OpenStreetMap, the link to which I will leave below.
Detais Here