BaseX is a native XML database written in Java. It features compact storage structures, a very efficient XQuery implementation and a GUI frontend with fast tree visualizations. Release 5.5 of BaseX offers the following new features: Improved support of XQuery/XPath Full-Text 1.0; High XQuery Conformance, reaching 99.9% of the W3C XQuery Test Suite, numerous optimizations; XQJ and XML:DB API; enhanced TreeMap visualization.

AltovaXML 2010 is a free XML standards processor that includes the Altova XSLT 1.0 and schema-aware XSLT 2.0 engine, schema-aware XQuery engine, XBRL validator, and XML validator. Now developers can use the same engines found in Altova XMLSpy in their own applications, free of charge. AltovaXML includes COM, Java, and .NET interfaces and supports command line operations. It is standards-based and is the only XML processor to support Office Open XML (OOXML) files.