Check out DocBook resurgent: what it tells us about structured writing and component content management by Mark Baker. Here is an excerpt:
A new XML-based content management system that is not based on DITA. Bet you didn’t see that coming. But I think it tells us something interesting about the two sides of structured writing. Tom Johnson’s recent sponsored post explains the origins of Paligo, a relatively new CCMS out of Sweden….
The full article is available here.