Common Locale Data Repository (CLDR) Project
To support users in different languages, programs must not only use translated text,
but must also be adapted to local conventions. These conventions differ by language or
region and include the formatting of numbers, dates, times, and currency values, as well
as support for differences in measurement units, text sorting order, and other services.
Most operating systems and many application programs currently maintain their own
repositories of locale data to support these conventions. But such data are often
incomplete, idiosyncratic, or gratuitously different from program to program. In the age
of the internet, software components must work together seamlessly, without the problems
caused by these discrepancies.
The purpose of the Common Locale Data Repository project is to provide a general XML
format for the exchange of locale information for use in application and system
development, and to gather, store, and make available a common set of locale data
generated in that format.
The project is organized under the Unicode Common Locale Data Repository Technical
Committee (CLDR-TC), governed by the CLDR-TC Procedures. The
normal process for changing locale repository data is described in
CLDR Process. For information about joining the Unicode Consortium, see
The first CLDR version under the sponsorship of the Unicode Consortium was version 1.1.
The CLDR project was originally developed under the sponsorship of the Linux Application
Development Environment (aka LADE) Workgroup of the
Free Standards Group's
OpenI18N (formerly known as Linux
Internationalization Initiative or Li18nux) team. CLDR 1.0 was approved on 2004.01.16 by
the OpenI18N steering committee. The founding members of the workgroup were
IBM, Sun and
Thanks to the following people for their contributions to the CLDR 1.0 and LDML 1.0:
Helena Shih Chapman, Mark Davis, Simon Dean, Deborah Goldsmith, Steven R Loomis, Kentaroh
Noji, George Rhoten, Baldev Soor, Michael Twomey, Ram Viswanadha and Vladimir Weinstein.
Special thanks to Akio Kido, Hideki Hiura, Tom Garland, and the OpenI18N organization for
the sponsorship of this activity, and to the ICU team for hosting the CVS repository and
collecting and managing the data for the project.
(Acknowledgements for later versions are in
UTS #35: LDML.)