I am looking for a web-based WYSIWYG (or WYSIWYM) editor like TinyMCE or WMD Editor (used to write this question) that supports users to write mathematical formulas. I have looked at LaTeX a little bit but it has a learning curve and I am not sure if support for MathML is extensive. Ideally I would also like to avoid having to rewrite an editor and would rather just pick one off the shelf.
Would like to know if any of you have dealt with a similar situation and what solution you adopted/built.
http://www.dessci.com/en/ has the software to do exactly what you want.