WPML lets authors write content in different languages and translate content. It also includes advanced features for translation management and an interface for professional content translation. List of Extensions: WPML Multilingual CMS WPML String Translation WPML Translation Management WPML Sticky Links WPML CMS Nav WPML Media WPML Mailchimp WPML All Import WooCommerce Multilingual Gravity Forms Multilingual Advanced Custom Fields Multilingual WooCommerce Gateways Country Limiter BuddyPress Multilingual Contact Form 7 Multilingual Yoast SEO Multilingual