A straightforward previewer for TeX, a specialized typographic system.
Small utility that allows you to quickly typeset LaTeX equations, without bothering with file creation, preambles, and so on.
Edit and typeset LaTeX, Plain TeX, and Markdown on your Mac
Mac OS X application to typeset formulas written in LaTeX.
TeXor is a batch Typesetter for TeXShop, with hyperlinked console.