Castbox is a global podcasting company founded in 2016 by CEO Renee Wang in Beijing, China, with its headquarters in San Francisco. The platform offers access to over 50 million podcasts and approximately 95 million episodes in 70 languages, catering to a diverse audience across 175 countries. Castbox is recognized as the largest podcast platform on Android, supporting around 2 million daily users.

The company provides podcast hosting and distribution services, including original content production with series like *Heard Well Now* and *This Sounds Serious*. Castbox also features a premium subscription service with enhanced functionalities. Its platform incorporates advanced AI-driven tools, such as in-audio search and curated recommendations, and is accessible on various devices, including mobile apps, smart home devices, and car systems. With significant funding to support its growth and technology development, Castbox aims to enhance the way people discover and enjoy spoken audio content.