Orangevolt XSLT
OrangevoltXSLT for Eclipse provides XSLT support to the Eclipse platform.
It is the Eclipse based successor of the java/swing based XMLWrite XSLT development environment providing many great enhancements for xsl/xml editing inside Eclipse.
Orangevolt EclipseXSLT lets you transform xml documents by widely configurable XSLT launch configurations. The software extends the Eclipse xml editor with a customizable xml outline, an xpath navigator view and many many more.
Come to more: http://eclipsexslt.sourceforge.net/