Nextcloud mind map offline access

Does anybody knows how to open a mind map file (.km) offline?
I use these mind maps a lot when I’m conected to my nextcloud server, but I want to use them offline too. Is there an application (for Windows 10) that I can use for it?

If you want to edit .km file in desktop, you can try Naotu:

Thank you very much, Soko. Your suggestion help me a lot.
What about edit .km in Android, do you suggest something?

Sorry, don’t have an app for that. Did you look at the playstore?