I created the small open-source flat-file-cms https://typemill.net. It is especially dedicated to authors and writers that focus on a special topic. It is a small side project right now but I have two main goals for future development: Make writing profitable with all kind of monetization options and provide content in multiple formats like html, ebooks and more.
Long way to go, but coil and interledger might be a perfect fit so I am excited to play around with it
Cheers from Sebastian