PodBooker - The easiest way to get booked on podcasts
Speaker Directory by HeySummit - Guests for your next event or podcast (or submit yourself!)
PodKoi - Find podcasts to be interviewed on & guests to interview.
The Weekly Forekast Newsletter - The Weekly Forekast makes it easy to see what’s going to be trending every week by delivering dozens of events to your inbox every Monday morning.
Interviewed - A growing database of podcast interviews about startups
Meetup for iOS and Android - Discover groups that are all about the things you love