The GNU gettext package provides a set of tools and documentation for
producing multi-lingual messages in programs.
Tools include a set of conventions about how programs should be written to support message catalogs, a directory and file naming organization for the message catalogs, a runtime library which supports the retrieval of translated messages, and stand-alone programs for handling the translatable and the already translated strings.
Gettext provides an easy to use library and tools for creating, using, and modifying natural language catalogs and is a powerful and simple method for internationalizing programs. The library is available as 32-bit and 64-bit.