gPodder is a simple Open Source podcast client capable of downloading and management of your podcast subscriptions.

It is written in Python using GTK+ and includes support for MP3 and mobile phone players. The interface is easy-to-navigate allowing for almost immediate use after downloading and opening. It is additionally capable of pulling Atom, RSS, Soundcloud, and YouTube feeds. You are also provided with a built-in list of the top podcasts so you can explore them for inspirational ideas or load your own.

gPodder has numerous configuration options to set its behavior: how it plays podcasts, handles downloads, and many others. There is an extensive user-manual to help get you started available at the author's site.