Narration Box is a voice synthesis service that enables users to create voiceovers, narrations, audiobooks, audio pages, podcasts, and more. It features more than 700 AI-enhanced human-like narrators in over 20 languages, a power-packed speech editor, and audio widgets for blogs and news sites. It also includes resources such as FAQs, feedback, updates, and more. It is free to get started and provides tools for distribution, analytics, monetization, and more.