Stable Release 1.4 (Codename: Eindhoven)
Release 1.4 is our current production quality release.
Among other things, it improves eXist's XQuery processing thanks to a better and more robust handling of in memory documents. It features faster and customizable full text indexing by transparently integrating Lucene into the XQuery engine.
eXist now also provides a lightweight URL rewriting and MVC framework (which in part replaces Cocoon), along with support for XProc, XForms and many new XQuery extension modules.
Download page: http://www.exist-db.org/download.html