i18n Package
The i18n package is a library of Delphi components, classes and procedures in purpose of assisting developers to fully internationalize Delphi applications in an easy manner, and to change the locale of the applications on the fly.
There are many software tools for localizing a Delphi application, but they mostly just provide support for translation of the user interface strings. However, the i18n package not only enables developers to select translatable properties and string constants/literals within the IDE but also takes care of plural forms, reading layout, formatting preferences, and calendar system of the target language.