The vmm file extension is associated with Visual Mind. Visual Mind is application for export/import capabilities including distribution and publishing functions that allow easy sharing of maps. File with vmm extension contains document.
How to open:
Use Visual Mind software to open files with vmm extension.
How to convert:
As far as we know, this .vmm file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.