- Acclimation - This project is meant to provide tools for internationalizing Common
 - cl-gettext - cl-gettext is a binding the the GNU gettext internationalization library
 - cl-i18n - cl-i18n is a GNU gettext-style internationalization library originally written by Leslie P
 - cl-icu - cl-icu is a common lisp interface to the ICU internationalization library
 - cl-l10n - cl-l10n is a portable library for handling program localization
 - cl-locale - cl-locale is a simple i18n (internationalization) library for Common Lisp
 - cl-unicode - CL-UNICODE provides Common Lisp implementations with knowledge about Unicode characters including their name, their general category, the scripts and blocks they belong to, their numerical value, and several other properties
 - iso-3166-1 - iso-3166-1 is a list of ISO 3166-1 alpha-3 country codes
 - princ-ut-interval - princ-ut-interval prints time durations in human readable format
 - translate - translate is an abstraction layer for internationalization
 - uax-15 - uax-15 is a Common lisp implementation of Unicode normalization functions :nfc, :nfd, :nfkc and :nfkd (Uax-15), much like the icu internationalization library
 
- Overview of the challenges internationalizing text msgs, in many languages.
 - Babel - Babel is a character encoding/decoding library, not unlike GNU libiconv, but completely written in Common Lisp
 - Cliconv - Cliconv is a simple FFI interface to the iconv library that lets Common Lisp programs translate byte sequences from/to different character encodings
 - creole - creole is a library for converting a string between multibyte and unicode character encodings
 - flexi-streams - FLEXI-STREAMS is a library which implements "virtual" bivalent streams that can be layered atop real binary/bivalent streams
 - guess - guess Japanese encoding (gauche's algorithm)
 - trivial-utf-8 - Trivial UTF-8 provides more efficient ways of reading and writing UTF-8 for implementations that already support Unicode
 
Unicode and character encoding: (main topic: character encoding)