Data Sources

These are the data sources for all the data on LocalePlanet: Compare them!

ICU logo The ICU data is from IBM's ICU Project (license). The list comes from in ICU4J version They actually have their own Locale Explorer for browsing the low-level ICU locale data. IBM

Oracle The Java data is from Java. The list comes from java.util.Locale.getAvailableLocales() in version 17.0.10 from Eclipse Adoptium. It should match the official list. Oracle

Microsoft The .NET data is from Microsoft's .NET framework. The list comes from System.Globalization.CultureInfo.GetCultures() and should match the lists documented here and here. Microsoft

Google The Google Translate data is from (obviously) Google Translate (as documented here). Google

Find missing locales in each source.

Other data sources

These are some additional sources that may one day be supported. Stephen Colebourne's Joda Time, Joda Time i18n and Joda Money.
Ethnologue SIL's Ethnologue code tables.
CLDR Unicode Consortium's Common Locale Data Repository (aka CLDR).

Also see the list of standards applicable to localization.