It seems there are few of them but here is those i know :
I tried other tools mentionned above but none could fit my requirements. Once i had to document some xsl code for a project. I needed to do it fast and easily if possible. Lots of tools I tried were very buggy but i managed to produce the documentation on time. After struggling with command line parameters and workarounds i did it!
You can send me an email at yveszoundi at users dot sf dot net. I will reply as soon as possible.