Stylus Studio fully supports XML document validation based on Document Type Definitions (DTD) to ensure compatibility with legacy XML systems. DTDs can be internally or externally defined. To validate an XML instance document against a DTD, simply click on the "Validate DTD" button.

Stylus Studio's DTD generator supports the automatic generation and association of both internal and external DTDs based on XML instance documents. A Schema tab at the bottom of the XML editor alows you to view the XML content model associated with the XML document that is current being edited.

Stylus Studio DTD Editor for building Document Type Definitions (DTD) using a tree-like interface.

DocBook is a DTD maintained by the DocBook Technical Committee of OASIS. It is particularly well suited to books and papers about computer hardware and software (though it is by no means limited to these applications).

This Java library, a standalone version of the DTD parser the author developed for JOX, will parse a Document Type Definition (DTD). It returns a DTD object, which is similar to the Document object in the Document Object Model (DOM). The author solicits any suggestions regarding the data model.

DTDGenerator is a program that takes an XML document as input and produces a Document Type Definition (DTD) as output. The aim of the program is to give you a quick start in writing a DTD. The DTD is one of the many possible DTDs to which the input document conforms. Typically you will want to examine the DTD and edit it to describe your intended documents more precisely.

This little tool is here to help you to document your DTD's efficiently. It is a straightforward extension of the javadoc concept and a not so straightforward implementation of some of the concepts solidified by a half-God.

Quick, a tool for mapping XML documents to Java and back, and DTDParser, a Java tool for reading in document type definitions, both received updates over the last week.

DTD to XML Schema translator lets you translate a Document Type Definition into an XML Schema (REC-xmlschema-1-20010502). The translator can map meaningful DTD entities onto XML Schema constructs (simpleType, attributeGroup, group); the XML document model is not anonymized. In addition, the translator can map DTD comments onto XML Schema documentation nodes in various ways.

The DTD Parser is a set of Java packages for exploring DTDs. For example, it could be used by software that generates a database schema or Java classes from a DTD.

The DTD Parser can parse an internal or external subset in the form of a SAX InputSource and build a structure of non-standard objects representing the DTD, which can then be used to explore or modify the DTD. The package can also be used to convert between DTDs and the DDML schema language.

Allora leverages leading edge XML mapping and database technology to give application developers bi-directional access to relational databases without the need for complex SQL or XSLT programming. Allora speeds development and deployment by accurately and transparently transforming data structures between XML elements/attributes and relational database structures. Once Allora mapping is in place, full bi-directional XML-RDB access is enabled. Allora gives developers a simplified, consistent XML interface to relational data.

A Conversion Tool from DTD to XML Schema.

NekoDTD is a configuration that parses Document Type Definition (DTD) files and converts the information into an XML document. This representation can then be processed using standard XML processors and applications to perform grammar analysis, convert the DTD into other grammar formats, etc. For example, using an XSLT stylesheet, the XML representation of the DTD can be converted to an equivalent XML Schema or Relax NG grammar.