Sleepycat Software has released Berkeley DB XML 2.2, an open source "application-specific, embedded data manager for native XML data" based on Berkeley DB. It supports the April 2005 working drafts of XQuery 1.0 and XPath 2.0 (not the more recently released Candidate Recommendations). It includes C++, Java, Perl, Python, TCL and PHP APIs. New features in 2.2 include: