PodBooker - The easiest way to get booked on podcasts
App Store Launch Stories - A podcast about the stories behind app launches
PodKoi - Find podcasts to be interviewed on & guests to interview.
Daily Hunt - A podcast with the makers of hunted products, every day
Speaker Directory by HeySummit - Guests for your next event or podcast (or submit yourself!)
The Pitch - The podcast where early stage startups pitch investors