Question: I'm converting all of our Crystal Reports to use a home-built reporting system. Essentially, I serialize report objects to XML, transform that with XSL to HTML/CSS. Everything works beautifully, except for the design process.

Once I get the XML built correctly, I have to open up the XSL and CSS in SciTE, edit, reload in IE, lather, rinse, repeat. I'd love it if there was an XML/XSL editor that could show the transformation in real time and speed up my process. Can anyone make any recommendations?

Answer: 
This one is online javascript editor. 

<http://www.purplegene.com/static/transform.html>

No matter you are a Windows, Linux or Mac user it will simply work!
I've used the XSLT debugger in Visual Studio. Very useful.

<http://msdn.microsoft.com/en-us/library/ms255605.aspx>