GNOME Podcasts lets you access all of your favorite podcasts on your desktop.
Listen Later converts videos to audio and lets you listen to them as podcasts on your devices.
Juice lets you listen to and manage podcast feeds on multiple desktop platforms.
Winds lets you read your RSS feeds and listen to your podcasts using a modern interface with new content recommendations.
Vov Podcast Downloader allows you to easily download your favorite podcasts to your computer.