XSLPalette -- The free, native XSLT 2.0 and XPath 2.0 debugging palette your text editor has been missing.
XSLPalette is a floating palette that brings XSLT debugging features to your favorite Mac OS X text editor. I like to combine Marc Liyanage's XSTL BBEdit Glossary for XSLT code auto-completion with XSLPalette for a full-featured XSLT editing environment.
XSLPalette is a floating, non-activating palette that will integrate well with your favorite text editor. It's almost like the XSLT palatte your editor has been missing. XSLPalette will add the following to your text editor: