Just an update. Serna is not distributed anymore as open source project. "On September 2012 InfoTrust Group acquired Serna Enterprise XML Editor from Syntext, Inc. and no longer makes available the open source version." ref: http://en.wikipedia.org/wiki/Syntext_Serna The last known version is 4.4 (~December 2011). The bitbucket repository was deleted, an online copy can be found here: https://github.com/malaterre/serna-free-backup