lcid
There are 3 repositories under lcid topic.
divvun/iso639-databases
ISO 639 tables for managing autonyms, LCIDs and default ISO 15924 scripts in a machine-readable format
sylvaincombes/php-lcid
Library to find iso language code from a microsoft LCID
TiagoDanin/Windows-Locale
Windows Language Code Identifier (LCID) for JavaScript