Stellar is a content-ready single-page web app connected to the Cosmic JS API. It's built on a light Node.js server with a front end by @ajlkn at HTML5 UP. You can edit pretty much everything on the page in the Cosmic JS CMS. Sign up for Cosmic JS to install this app and edit the content in your own bucket. To run locally:
git clone https://github.com/cosmicjs/cosmicapp-stellar
cd cosmicapp-stellar
npm install
npm start