A podcast directory is a listing of syndication feeds that link to a podcast. They are often organized by category and topic, and allow the user to find a feed that podcasts about almost anything. Just as search engines help people find sites with the information they need, a podcast directory presents a searchable list of podcasts users can subscribe to. Users may even be able to play the available feed episodes from within the site.

Unlike most search engines, though, a podcast directory rarely searches out and finds content on its own, automatically. All the feeds are either contributed by users who want people to find their podcast, or added
by the staff. Nearly anyone can set up a podcast, but gaining visitors can be difficult, and so podcasters can submit their feeds to the directory to gain readers.

Since its so easy to make a podcast, a podcast directory often uses ways to separate the very good feeds from the ones people do not enjoy as much. A directory may have a ranking system, feature certain special feeds on the front page, or even allow visitors to comment with their thoughts on a feed.

Visitors to a podcast directory can thus add their own podcasts, search for feeds on topics or regions that interest them, and even comment on those they like or dislike.