There are many different categories for filtering out podcasts, and it's a great way to find contact info for other podcasts as well as similar ones I want to pitch my clients to to be a guest on. Review collected by and hosted on G2.com.

I'm not sure how accurate the data it includes is, and sometimes the information (both contact and info about individual podcasts) can be out dated. I find myself having to double check on Apple Podcasts to see what shows really are the biggest. Review collected by and hosted on G2.com.