Flask-BabelEx adds i18n/l10n support to Flask applications with the help of the Babel library. It is a fork of the official Flask-Babel extension with the following features:

1. It is possible to use multiple language catalogs in one Flask application; 2. Localization domains: your extension can package localization file(s) and use them if necessary; 3. Does not reload localizations for each request.

Flask-BabelEx is API-compatible with Flask-Babel.