Block Together - A useful tool which helps you block trolls on Twitter.
Speaker Directory by HeySummit - Guests for your next event or podcast (or submit yourself!)
Secateur - Use Secateur if you want to temporarily or permanently block or mute (or both block and mute) a Twitter account and all its followers.
PodBooker - The easiest way to get booked on podcasts
Moderate - Identify, mute, and block trolls in your Twitter feed
Suggest a Guest - Easily suggest a guest for your favorite podcasts