XML

BMGridXML
A COM-based component that allows a quick and flexible way to format and display data as a tree or grid from an associated XML file. By Blue Mango. [Free and commercial versions]
http://www.bluemango.com/

Chilkat XML
A high-performance ActiveX that is an alternative to the standard XML DOM for creating, navigating, and manipulating XML data.
http://www.chilkatsoft.com/ChilkatXml.asp

ickXMLp
Part of Internet Commerce Kit. It is a lexical XML parser for manipulating XML (and/or HTML) documents. By devSoft Inc.
http://www.nsoftware.com/products/component/?c=XMLp&sku=

Stonebroom Limited
Provides a simple to use interface between any ODBC or OLE-DB compliant data source and any XML-enabled client.
http://www.stonebroom.com/swindex.htm

XML Config Object
An ActiveX control with set of top-level methods and properties to simplify manipulating XML data.
http://www.apolisoft.com