Activemath.org has 2 URLs listed in 2 Dmoz categories.
MathML and DSSSL Files Files relating to parsing MathML in an SGML/XML system, and DSSSL style sheets which may be used to render mathematics to TeX or to RTF (for Microsoft Word, for example). Drafts published by David Carlisle. http://om-candidate.activemath.org/software/mml-files/ Top/Computers/Data_Formats/Markup_Languages/Mathematical/MathML
MathUI 2006 Mathematical user-interfaces workshop, in conjunction with MKM 2006. St Anne's Manor, Wokingham, UK; 10 August 2006. http://www.activemath.org/~paul/MathUI06/ Top/Science/Math/Events