Mathcast equation editor

Need an equation editor for my UW Course. Don’t have office installed anymore and so don’t have the free one that comes with office. MathCast Equation Editor seems to be the leading open source altenative — also requires a font package from MIT. Seems a little obtuse but hey I am editing equations so I am swimming in obtuse. I guess OpenOffice has an equation editor too but I don’t want to install all that cruft.

Smarth is an online alternative but doesn’t seem to function that well in Firefox. I really wish google docs would support equations but oh well.