XML Databases
Forest
Forest is a (native) XML database written in Python. It is intended to support fast queries of XML data.
https://svn.infrae.com/old/forest/
4ODS
www.4suite.org/ (website gone)
xsdbXML
BaseX
BaseX is a light-weight, high-performance and scalable XML Database engine and XPath/XQuery 3.0 Processor, including highly conformant support for the W3C Update and Full Text extensions. The system provides a Python client API:
http://docs.basex.org/wiki/Clients
https://github.com/BaseXdb/basex-api/tree/master/src/main/python