Validate XML against XSD software [closed]
Visual Studio will do this for you. So too will Altova Xml Spy.
There are also a number of free tools that can do this for you; check out DanSharp XmlViewer @ http://www.bizbert.com/bizbert/2007/11/25/DanSharp+XmlViewer.aspx
this does a great job of assisting with XPath statements and XSD validations etc.
Liquid XML Studio isn't a bad option, and from what I remember it'll do what you need.:
XML-ValidatorBuddy is an affordable and easy to use tool for validation and it also works for multiple and large XML files.