DatoCMS is a web-based administrative area for your Jekyll static websites. Develop your Jekyll websites in Ruby, just like you're used to, and deploy your static website wherever you like (Amazon S3, Netlify, you name it).
Your clients will edit the site content from a nice, simple web interface, exactly like any traditional content management system!
How does it work? Just integrate our DatoCMS plugin for Jekyll into your project, and you're ready to go!