Line 21 is a subtitle delivery software that helps organizations create, enhance, translate, and deliver real-time subtitles. It integrates a wide range of services, delivering subtitles to various terminals, supporting subtitles, translation, and proofreading in over 100 languages. Its advantages lie in fast subtitle delivery, automatic translation, and the provision of AI-powered proofreading features. Its pricing is flexible, aimed at helping organizations improve the inclusivity and accessibility of their real-time content.