MSXML or MSXML3 is a XML Parser from Microsoft. MSXML3 also implements XSLT, XPath, SAX2 and has very good DOM and namespaces support. Microsoft MSXML Web site

Microsoft XML Core Services (MSXML) is a set of services that allow applications written in JScript, VBScript and Microsoft Visual Studio 6.0 to build XML-based applications. It supports DOM, SAX and XSD.