I was surprised to see Pocket Casts on that list. I did not remember it being open source (though that might have been my standard when I was initially looking), and anyway I subscribe to PocketCasts+ , so it's a paid service for me. https://alternativeto.net/software/pocket-casts/about/

<s>I like that playback resumes seamlessly when I move between my devices -- for instance between my car Android (which downloads files for playback later) to the office Windows PC (where I stream via the web app, which is pretty solid). Some of this functionality (but I forget which) comes with the PocketCasts+ subscription.

I have not used other podcast apps in many a year, so I don't know what the competition is like now. When I first started using PocketCasts, I found it by far the best option. Also, I have not used the Windows application.</s>

Edit: the Pocket Casts website only lists the mobile apps as open source, and the Windows application is probably a web wrapper. Never mind.