Winds
Winds is a free and open source RSS aggregator, a software for searching and listening to podcasts
Streamtuner2
Streamtuner2 is a free and open source GUI directory browser for internet radio, audio and video streams
Musictube
Musictube is a free and open source program to listen to music/songs from YouTube
CPod
CPod a simple, beautiful cross platform free and open source podcast app for Windows, macOS, and Linux
Auryo
Auryo – free and open source cross platform unofficial beautiful SoundCloud client for your desktop
GPMDP
Google Play Music Desktop Player a unofficial beautiful cross platform Desktop Player for Google Play Music
gPodder
gPodder is a simple, cross-platform free and open source podcast downloader, player, and sync tool
GNOME Podcasts
GNOME Podcasts – free and open source desktop podcast client has a simple and straightforward UI
Kaku
Kaku – free and open source music player supports different online platform like YouTube, SoundCloud, Vimeo and more
Poddr
Poddr – free and open source podcast desktop client, podcast aggregator, a application for searching, listening, and managing podcast subscriptions