Complex sentence: There are different versions of maps running on the iGO Navigation software for the same country/region made by different map suppliers, including TomTom, Navteq, Sensis, as well as regional providers.
Split into simpler sentences: There are different versions of maps running on the iGO Navigation software for the same country/region made by different map suppliers. Major suppliers are TomTom, Navteq, Sensis, as well as, regional providers.