TeX, and associated programs such as LaTeX, is a system for computer typesetting, for placing text on a page. (Pronounce the name "tech".)
TeX is best known for its abilities with mathematical and scientific text and other difficult typesetting jobs; it allows ordinary users to produce output of the highest typographic quality. This is crucial for complex texts, where the ability of readers to understand the material depends on the clarity with which it is presented.
Update, install and manage Tex Live Manager from an intuitive UI.
Bibliographic reference manager for OS X.
Small utility that allows you to quickly typeset LaTeX equations, without bothering with file creation, preambles, and so on....
Free open source TeX/LaTeX-Aware spelling checker.
A straightforward previewer for TeX, a specialized typographic system.
A powerful application that allows users to edit TeX files.