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: it plays podcasts, handles downloads, and many others. In addition, there is an extensive user manual to help get you started available at the author's site.