Softcover is a startup offering what it calls a "frictionless" platform for self-publishing e-books. Co-founder Michael Hartl is an author himself, having written the Ruby on Rails Tutorial. (He's ...

Sep 2, 2008 was the Tutorials Day @ Rails Conf Europe . I attended Renegade's Guide to Hacking Rails Internals (partly) and Deploying and Monitoring Ruby on Rails .

All in all, most of the Ruby on Rails open source CMS offerings are still in an immature stage, built to scratch the itch of one or a few developers. Still, these are all in use on production sites.