Indeed, MapInXL does not work on Mac, due to choices of developments.
However, it does work with Parallel Desktops if Office 2007 is installed. This way, MapInXL works in a Microsoft environment.
If you do have Parallel Desktop, do not hesitate to download the free trial version available on www.mapinxl.com.
We do have another mapping software supporting Mac though, that you can discover on www.articque.com/en/. This software, called C&D, works with Excel and text files, and can be connected to databases thanks to an ODBC pilot.
You can download the Personal free version to test its functionalities. It includes the USA by states and the world by countries, just like MapInXL.