InfoLogic (http://www.mathmagic.com/) has released MathMagic Personal Edition 8.5, an update of their multi-purpose mathematical equation editor for Mac OS X 10.6 or higher.
MathMagic Personal is a standalone equation editor for mathematical equations and scientific symbols. The upgrade adds various frame types, more sigma shapes, enhanced fences, faster typing of script values & LaTeX expressions, and more.
MathMagic Personal Edition 8.5 is available for US$69 (academic licenses are $49). The software is available in a fully functional trial version for up to 50 equations.