language-subtag-registry
Full BCP 47 language subtag data from the official IANA repository, in JSON format with multiple indices.
larvitgeodata
Geo data, primarily ISO territories, languages etc. Data fetched mostly from CLDR.
language-name-map
A function to lookup the language name for a given locale code. In data included: english names, native names and directionality.
lang-map
Get the language associated with a file extension or the extensions associated with a language using the data from GitHub's [Linguist YAML file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml)