iOS NSLocale ISO639.2 language code category
A simpler, faster ISO 639 library.
ISO 639 tables for managing autonyms, LCIDs and default ISO 15924 scripts in a machine-readable format
PHP library to convert ISO-639-1 code to language name, based on Wikipedia's List of ISO 639-1 codes
A simple library for working with ISO639-2
ISO 639 language codes
ISO-639-1 language codes mapping to Haskell datatypes