If you
search the internet through a search engine for the term 'XML editor',
you might find a lot of products in that category. A lot of freeware
and commercial products are available for XML editing.
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Most
of the leading products in that category will have an option to work
with the DTD files. Code completion, syntax coloring, and contextual
help are some of the features that you can expect in such products.
With the code completion feature it is not necessary to remember all
the syntax and the values of the attributes.
XMLSpy
is one product that has been in the market for a long time and the features
of this product are many. This product can be used as a DTD tool with
ease.
The interface
is user friendly. But this is a commercial product and you have to buy
it to use all the features. Xselerator is another product that can also
be used as a DTD tool. Products like Stylus Studio, Exchanger, and Cooktop
are also used for this purpose. There are many such products in the
market.
Software supports editing inside ZIP-based packages. (ThomasNet)
Oxygen XML Editor and Oxygen XML Author v9.3 offer support for editing, transforming, and validating documents composing Office Open XML package directly through archive support. Users can extract, validate, edit, and process XML data stored in OpenDocument files, enabling use of data from ODF documents together with validation and transformations to other file formats. With Compare Directories ...