TDOM takes advantage of Expat, the XML parser from James Clark, including namespace and DTD support. It includes a modified version of Tclexpat, the Tcl interface to Expat, with event-based XML push (SAX-like) and pull (StAX-like) parsing. tDOM comes with a (partial) DOM-I and DOM-II implementation in C for maximum performance and minimum memory need. A very complete, compliant, and fast XPath implementation is provided. A fast XSLT implementation in C completes the basic feature set. tDOM interfaces with the gumbo HTML5 parser and provides a robust JSON parser/ serializer for JSON-to-JSON roundtripping. Documentation is provided in TMML, HTML and nroff formats.