Forum .LRN Q&A: LaTeX
This utility allow to the teachers and students write math formulas in Ascii and Latex inside forums, portlets, etc.
You can to see a demo in:
At present the code is ported to PHP. Not a lot of work to carry the code to XOtcl.
Moodle have integrated this funcionality http://math.chapman.edu/~jipsen/talks/MathFest2005/JipsenMathFestSlides2005.html