Apps similar to GNU gettext include Graphite (SIL), which is free and open source. Other options are Fluent and International Components for Unicode. In total there are three Translators like GNU gettext for Mac, Windows, Linux and self-hosting.
Graphite is a programmable Unicode-compliant smart-font technology and rendering system developed by SIL International as free software, distributed under the terms of the GNU Lesser General Public License and the Common Public License.
Innovative: Natural-sounding translations with genders and grammatical cases when necessary. Locale-specific logic doesn't leak to other locales.
United States
International Components for Unicode (ICU) is an open source project of mature C/C++ and Java libraries for Unicode support, software internationalization, and software globalization. ICU is widely portable to many operating systems and environments.
