MiKTeX

MiKTeX is a typesetting system for Microsoft Windows that is developed by Christian Schenk. It consists of an implementation of [TeX] and a set of related programs. MiKTeX provides the tools necessary to prepare documents using the TeX/[LaTeX] markup language, as well a simple tex editor (TeXworks). http://en.wikipedia.org/wiki/MiKTeX

MiKTeX is a common choice for authors using Windows.