Formed - Convert your many HTML files into text files.. Free command-line program that checks your XML document is valid according to a DTD.

HTML to Text Batch Convert Multiple Files Software 7.0
Quickly convert your many HTML files into text files. Load multiple .htm and .html files into the program and export them automatically in seconds. This program will strip off all unncessary html tags so that just the text content is saved.
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XmlValidator 0.9
XmlValidator is a free command-line program that checks your XML document is valid according to a Document Type Definition (DTD). If no DTD is specified XmlValidator will check that the Xml document is well-formed.
xmlvalidator, xml, validate, validator, well-formed, wellformed, well, formed, check, validity,