MathCast is an application that allows you to input mathematical
equations, which can then be used in written documents,
webpages, and even databases. Equations could be rendered
graphically to the screen, to picture files, or to MathML -
today's leading standard language for describing
mathematics. MathCase can be used freely by anyone:
students can create equation sheets to help them in their
studies, educators can write handouts or study guides,
webmasters can add mathematics to their website, and the list
goes on and on.
(open source, Windows.)