FlaskBB

The plugin system allows for easy extension of functionality, enabling custom features without modifying core code, as highlighted in the key features list.

Native i18n support facilitates creating multi-language forums out of the box, making it suitable for global audiences without additional setup.

Provides both a web-based admin interface for day-to-day management and command-line tools for automation, as listed in the features for efficient operation.

Completely themeable design allows full control over the forum's appearance using Jinja2 templates and CSS, supporting bespoke branding and user experience.