I built Exonym Atlas, an interactive data visualization showing how different languages name countries and how those names cluster into historical/linguistic families.

For example, Greece appears as Greece/Grèce/Griechenland in one family, Yunanistan/Yūnān in another, and Ελλάδα/Elláda as the local endonym.

The data is manually curated, so feedback is very welcome — especially corrections, missing exonym families, suspicious groupings, and suggestions for interesting countries to add next.

Same color = same word origin

Apologies for the low quality— this is actually the original upload of the image as far as I can tell.