Sitemap Writer is a handy tool that helps to edit XML sitemaps for websites. It includes search engine notification tool (Yahoo!, Google, Ask & MSN), RSS import, HTML site map export etc.

EditiX is an XML editor and XSLT debugger for Windows,Linux and Mac OS X designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT / FO, DocBook and XSD Schemas.

Stylus Studio XML IDE features XML Editing, Debugging, Testing/Benchmarking & Deployment Tools for any XML technology, including XML Schema, DTD, XSL/XSLT, XPath, XQuery, XML Mapping, Web Services, SQL/XML, EDI, Legacy Data Integration and more.

XMLwriter is a powerful XML editor for Windows designed to help web authors and web application programmers take advantage of the latest XML and XML-related technologies such as XSLT and XSD Schemas.

It`s got everything an XSLT Editor should have plus a bit more like Intellisense and tag auto-complete! It`s also half the price of XMLSpy... so it`s great value. A 30 day free trial is available.