Common Locale Data Repository

The Common Locale Data Repository Project, often abbreviated as CLDR, is a project of the Unicode Consortium to provide locale data in the XML format for use in computer applications. CLDR contains locale-specific information that an operating system will typically provide to applications. CLDR is written in LDML (Locale Data Markup Language). The information is currently used in International Components for Unicode, Apple's macOS, LibreOffice, MediaWiki, and IBM's AIX, among other applications and operating systems.
Among the types of data that CLDR includes are the following:
It overlaps somewhat with ISO/IEC 15897 (POSIX locales). POSIX locale information can be derived from CLDR by using some of CLDR's conversion tools.
CLDR is maintained by the CLDR technical committee, which includes employees from IBM, Apple, Google, Microsoft, and some government-based organizations. The committee is currently chaired by John Emmons (IBM), with Mark Davis (Google) as vice-chair.