Altova's XMLSpy is an extremely powerful XML editor with excellent tools for creating XML Schemas, XSLTs, and basic XML documents, but as it cost nearly $500 for the Professional version, you'll likely want to try it before buying it.
Luckily you can download a fully functional trial version of the Enterprise version of XMLSpy here. Note that, unless you want to try the whole Altova MissionKit, make sure you download the trial just for XMLSpy.
You can use the trial version in any of our XML, XSL, and XML Schema classes as a way of learning the XML technology and familiarizing yourself with an excellent XML tool at the same time.
Note that XMLSpy is built for Windows. If you're on a different operating system, you can use XMLSpy if you have Windows Emulation Software.
Nat Dunn founded Webucator in 2003 to combine his passion for web development with his business expertise and to help companies benefit from both.