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. SourceForge.net: 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.