At work the templating is done with XSLT. I have the Bitflux freaks to thank for that.
Currently I’m writing a really tricky XSLT template (for me), so I was investigating a tool for getting things done quicker. And Marc Liyanage is my hero. He has written an OS X application called TestXSLT to quickly test an XSLT stylesheet against some XML file.
It accepts an XML and an XSLT file and gives you the parsed output. You can look at it in text mode, HTML mode (exactly what I need) and even XSL-FO (which I have never used).