Sorry for the shameless plug: A friend and I have launched a podcast publishing platform, batteries included, called Podigee (https://www.podigee.com https://w

Sorry for the shameless plug: A friend and I have launched a podcast publishing platform, batteries included, called Podigee (https://www.podigee.com https://www.podigee.com). The backend runs on Rails + PostgreSQL, the frontend is a mix of Rails and AngularJS. Also, we run dedicated download / stream servers with some nice Lua scripts for caching the files and reducing overall costs for AWS S3 traffic. The nicest feature is that once you upload an audio file, we will apply some good audio algorithms to it, encode it to different audio formats, and expose it automatically in your RSS feed.