A podcast database is a searchable catalog of podcasts and their metadata — shows, episodes, hosts, contacts, audience data, and reach — that PR, marketing, and media teams use to find, vet, and pitch the right shows. The best choice depends on the job. Podchaser is the most comprehensive: 6M+ shows, 2.19M+ verified contacts broken out by role, 20+ first-party audience demographics, brand-safety scoring, and transcript monitoring, plus a public API.