lcid
popularMapping between standard locale identifiers and Windows locale identifiers (LCID)
Updated by @sindresorhus
language-subtag-registry
popularFull BCP 47 language subtag data from the official IANA repository, in JSON format with multiple indices.
Updated by @mcg
iso-locale-tools
All world countries and data points about them, as well as tools for interfacing with that data.
Updated by @gretzky
@konfirm/iso15924
Implementation of ISO 15924:2004, codes for presentations of names of scripts
Updated by @rogier.spieker
resolve-locale
Detect and resolve locale for a given set of supported (country specific) locales
Updated by @fastner
iso-languages
Helpers for manipuling RFC4646 locales. Purpose is to have for each locale, the ISO639, ISO3166, ISO15924 and m49 references associated.
Updated by @emmkimme
lang-ietf-opentype
Map between IETF language tags and OpenType language system tags
Updated by @jclark