ANT4DOCBOOK is an ANT task for DOCBOOK
eXist-db is a feature rich Open Source native XML database
CAM XML Editor for XML+JSON+Hibernate+SQL Open-XDX sponsored by Oracle
Software builder for both veteran programmer and novice.
DocBook Editing and Processing for Eclipse
a selenium framework
xMind Desktop Exporter & xMind Web Reader
See http://okapi.opentag.com/ for LATES VERSION of the Okapi Framework