Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Spreaker - Spreaker website is a broadcasting studio that you will be able to move around with easily. The website provides users access to their podcast and live radio with the Spreaker Studio feature. Read more about Spreaker.
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Buzzsprout - Buzzsprout is a leading Podcast platform that allows you to enjoy, host, promote and track your own podcast.
TYPO3 - TYPO3.com - Infos, SLAs, Extended Support Versions and more
Podbean - A better way to discover and play all your favorite podcasts anywhere, anytime.