The best alternatives to UCast are Supertop, Otto Radio, and Earbud. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of UCast?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Listen to over 100,000 podcasts on Stitcher with your Amazon Echo device. Whether you're cooking, cleaning, starting or ending your day, Alexa can find and play podcasts for you on Stitcher. Stay up-to-date with the latest news, comedy, sports, entertainment and more.
A macOS menubar app for podcasts. Inspired by PodcastMenu but for more general purpose. You can * Browse/search podcasts from different regions and categories * Notification for podcast updates