Unicode CLDR is by far the largest and most extensive standard repository of locale data. This data is used by a wide spectrum of companies for their software internationalization and localization: adapting software to the conventions of different languages for such common software tasks as formatting of dates, times, time zones, numbers, and currency values; sorting text; choosing languages or countries by name; transliterating different alphabets; and many others. Unicode CLDR 2.0 is part of the Unicode locale data project, together with the Unicode Locale Data Markup Language (LDML: http://unicode.org/reports/tr35/). LDML is an XML format used for general interchange of locale data, such as in Microsoft's .NET.
For web pages with different views of CLDR data, see http://cldr.unicode.org/index/charts. For more information about the Unicode CLDR project (including charts) see http://cldr.unicode.org/.