Listen Notes

Listen Notes operates a comprehensive podcast search engine and database that indexes over 3.5 million podcasts and 177 million episodes from across the internet. The platform serves multiple user types including listeners researching specific topics or people, journalists conducting podcast-based research, students learning from audio content, and podcasters seeking cross-promotion opportunities.

The company offers both a consumer-facing website and a developer-focused API called Listen API for building podcast applications. Users can create custom podcast playlists through the Listen Later feature, which functions similarly to read-later services but for audio content, allowing people to curate individual episodes without subscribing to entire podcast feeds.

Listen Notes maintains data quality through automated scripts and human moderation to ensure their database contains genuine, human-created podcasts rather than low-quality or AI-generated content. The platform provides various discovery tools including real-time episode tracking, podcast similarity exploration, curated recommendations, and community-generated playlists accessible through RSS feeds for use in other podcast applications.