XML4P Perl DOM
- Includes a collection of Perl5 wrapper objects that internally use their XML4C counterparts for Level 1 DOM processing.
- http://xerces.apache.org/xerces-p/

Parsed XML Project
- Project implementing the DOM as a persistent object in the Zope application server. Currently implements Core levels 1 & 2, XML level 2, and some Core & Loading level 3.
- http://wiki.zope.org/ParsedXML/

Oracle XML Developer's Kit
- Contains a parser with a Level 1 DOM interface. Available in Java, C, C++ and PL/SQL.
- http://www.oracle.com/technology/xml/

Document Object Model
- Provides an overview of the DOM platform with an explanation of text nodes and element nodes.
- http://www.documentobjectmodel.info/

Minidom
- Lightweight DOM implementation in the standard Python library.
- http://www.python.org/doc/current/lib/module-xml.dom.minidom.html

DOM2 Reference
- Reference guide with examples for the second release of the object model.
- http://zvon.org/xxl/DOM2reference/Output/index.html

IBM's DOM Implementation in Java
- A validating XML parser written in 100% pure Java, which includes an implementation of the Level 1 DOM, some of the Level 2 DOM, and SAX. Now part of the Apache Xerces project.
- http://alphaworks.ibm.com/aw.nsf/techmain/F62DB5F8684DCF6A8825671B00682F34?OpenDocument

Ozone
- Open source, Java, OO DBMS which includes a DOM interface.
- http://www.ozone-db.org/

xmlBlaster
- XML and CORBA/RMI/XML-RPC based MOM (message oriented middleware) for Java/C/C++/Perl/Tcl/Python. Free for commercial and non commercial use (LGPL).
- http://www.xmlblaster.org/

Unicorn XML Processor
- A stand-alone ECMAScript interpreter that supports Level 1 DOM Core. An XSLT processor contains the same engine.
- http://www.unicorn-enterprises.com/

DOM 1 Reference
- Reference guide with examples.
- http://zvon.org/xxl/DOM1reference/Output/index.html

The Gnome DOM Engine
- Promises to create a fully standards-compliant DOM interface. It is based on Daniel Veillard's libxml.
- http://www.levien.com/gnome/gdome.html

Robin Cover's DOM Pages
- A list of DOM resources.
- http://www.oasis-open.org/cover/dom.html

Microsoft Internet Explorer - XML/HTML Browser
- Full support for the Level 1 DOM.
- http://www.microsoft.com/windows/ie/default.htm

IBM's DOM Implementation in C++
- XML for C++ parser (XML4C) is a validating XML parser written in a portable subset of C++. It implements Level 1 and some of Level 2 DOM, as well as providing SAX interfaces. Source code, samples and API documentation are provided with the parser. Now par
- http://alphaworks.ibm.com/aw.nsf/techmain/BAFBD2F79A8C641B8825675B0083C6DB?OpenDocument

Mozilla - XML/HTML browser
- An open-source XML/HTML browser which is implementing full Level 2 DOM support.
- http://www.mozilla.org/

DocZilla - an SGML/XML browser
- Built on Mozilla code, this browser has the same support for the DOM as Mozilla does.
- http://www.doczilla.com/index.html

NIST DOM tests in ECMAScript
- Tests currently written for MSIE; should be updated soon for other implementations.
- http://xw2k.sdct.itl.nist.gov/dom/index.html

4DOM
- A full DOM level 2 implementation for Python, included in the PyXML package.
- http://pyxml.sourceforge.net/topics/

DOMJuan: Koala's implementation of the DOM
- Java implementation of the DOM Level 2. Free and with source code. Currently (version 0.1) only the Core and Events modules are available.
- http://koala.ilog.fr/domjuan/

David Baron's DOM Tests
- Tests in JavaScript for compliance with some parts of the W3C DOM specs.
- http://dbaron.org/dom/test/