Allows to open, change and run multiple projects
Edit By BS Editor: The XML Hammer application is a free and open-source tool that simplifies elementary XML actions like checking for well-formedness, validation, transformation and xpath searches using any JAXP implementation.
After all these years of XML, it is still relatively difficult to simply validate or transform XML files. You are currently either forced to use extensive, sometimes expensive, and most often difficult to use tools with a lot of extra functionality unnecessary for these simple tasks and very often not flexible enough to provide what you want, or you will have to be almost a programmer and Create your own application or script to handle these elementary XML related tasks.

The XML Hammer tool addresses these issues by providing a free and open-source tool that has a (relatively) simple to use user-interface however still allowing the flexibility for the user to specify anything that he/she would have been able to specify when writing a script for this same task him/herself.
XML Hammer Features
The XML Hammer application allows to open, change and run multiple projects. Four different types of projects can be specified, the Transformer project can be used to run XSL Transformations, the Parser project can be used to parse and validate XML files, the Schema validator project is used to validate Schemas and the XPath search project is used to search XML files using XPath.

XML Input
The XML Input page allows to select the XML files that are used as input for the project. The XML files can be either specified one at a time or a filter can be used. The Filter allows to filter the input files in the current directory, optionally allowing to recurse through sub directories, using wild-cards or regular expressions.

XML Parser
The XML Parser project can be used to parse and validate XML documents. you can free download XML Hammer for liunx 1.0 now.