CLDR

The Common Locale Data Repository (CLDR) is a project of the Unicode Consortium that provides robust locale data for software internationalization and localization. It aims to cover the world's languages and regions, enabling applications to adapt formatting, display and behavior to local conventions.

The repository collects locale-specific data for many aspects of i18n: language names, territory names, scripts, date and time formats, number and currency formatting, calendars, units, plurals, day periods, time zones, sorting/collation rules, and locale-specific display names. Data is organized by locale (for example en, en-US, fr-FR) and by data category.

CLDR data is contributed by a global community of volunteers and organizations and is maintained by the Unicode Consortium. Data is distributed through releases and is used by many software platforms and libraries, including ICU, Java, Android, Chrome, and Firefox, to provide localized behavior without each project collecting its own data.

The project provides tools and a schema to validate, compare, and extract locale data, and it publishes documentation and release notes. CLDR releases are updated regularly to reflect changes in languages and conventions, and developers can consult the CLDR repository to incorporate updated data into their products.

Access to CLDR data is through the official website cldr.unicode.org and mirrors; licensing is governed by the Unicode project terms, with data intended for broad reuse.