XMLSpy Home Edition 

Altova XMLSpy 2006 Home Edition is a totally FREE entry level XML development tool for designing and editing XML applications. XMLSpy Home Edition supports Eclipse integration and is ideally suited for hobbyists, entry level developers, and students.
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Authentic 

Altova Authentic 2005 is a FREE content editor that allows non-technical users to modify content in XML documents and databases. Just fill in electronic forms using the intuitive, word-processor style interface, and your data is instantly updated.
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AltovaXML 

AltovaXML is a FREE XML standards processor that includes the Altova XSLT 1.0 engine, XSLT 2.0 engine, XQuery engine, and XML validator. Now developers can use the same processors found in Altova XMLSpy 2005 in their own applications, free of charge.
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HTML-Kit 

HTML-Kit is a full-featured editor designed to help HTML, XHTML, XML and script authors to edit, format, lookup help, validate, preview and publish web pages.
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WebCab Options and Futures for .NET 

3-in-1: .NET, COM and XML Web service Components for pricing option and futures contracts using Monte Carlo and Finite Difference techniques. General MC pricing framework included: wide range of contracts, price, interest and vol models.
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EZP3P 

EZP3P is a P3P XML utility that within a few minutes can apply a basic P3P policy to your web site. EZP3P can be used online or offline.
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