eXist is an Open Source native XML database featuring efficient, index-based
XQuery processing, automatic indexing, extensions for full-text search,
XUpdate support, XQuery update extensions and tight integration with existing
XML development tools. The database implements the current XQuery 1.0 working
drafts, with exception of the schema import and schema validation features
defined as optional in the XQuery specification.

WWW: http://exist-db.org/
