It seems that using the MAPC2MAPC converter it should be possible to convert OziExplorer maps (*.maps) to standard KMZ format (Compressed Keyhole Markup Language). But there are probably also other programs that are more than capable of this type of conversion.
Convert OziExplorer map file to Compressed Keyhole Markup Language (Google Earth) data.
We found one software available in the database for this conversion.
Microsoft Windows software - convert map to kmz on Windows
A digital map conversion software
Convert from map file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.